when I join a server or single player world, I will be in the world for 10-60 sec then I will crash. Plz help me. Also, could this be a personal computer problem. Thx.

Put the summary of the bug you're having here
when I join a server or single player world, I will be in the world for 10-60 sec then I will crash. Plz help me. Also, could this be a personal problem?
What I expected to happen was to stay on the server but I didn't.
Heres the crash report:
Feb 27, 2015 2:41:10 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name optifine.OptiFineTweaker
Feb 27, 2015 2:41:10 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name optifine.OptiFineTweaker
Feb 27, 2015 2:41:10 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class optifine.OptiFineTweaker
OptiFineTweaker: acceptOptions
OptiFineTweaker: injectIntoClassLoader skipped, OptiFine is loaded as a library
OptiFineTweaker: getLaunchArguments
OptiFineTweaker: getLaunchTarget
Feb 27, 2015 2:41:11 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Launching wrapped minecraft {net.minecraft.client.main.Main}
[14:41:14] [Client thread/INFO]: Setting user: jumodude
[14:41:14] [Client thread/INFO]: (Session ID is token:c19c9cd9f5ed447e9eb2682920108255:72164bc68c444173ab92aacf9ef404cc)
[OptiFine] (Reflector) Method not pesent: atr.func_149713_g
[14:41:18] [Client thread/INFO]: LWJGL Version: 2.9.1
[OptiFine]
[OptiFine] OptiFine_1.8_HD_U_A5
[OptiFine] Fri Feb 27 14:41:18 CST 2015
[OptiFine] OS: Windows Vista (x86) version 6.0
[OptiFine] Java: 1.8.0_25, Oracle Corporation
[OptiFine] VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
[OptiFine] LWJGL: 2.9.1
[OptiFine] OpenGL: Intel 965/963 Graphics Media Accelerator version 1.5.0 - Build 7.14.10.1409, Intel
[OptiFine] OpenGL Version: 1.3
[OptiFine] OpenGL Fancy fog: Not available (GL_NV_fog_distance)
[OptiFine] Maximum texture size: 2048x2048
[14:41:18] [Client thread/INFO]: Reloading ResourceManager: Default
[OptiFine] *** Reloading textures ***
[OptiFine] Resource packs: Default
[OptiFine] Checking for new version
[14:41:19] [Sound Library Loader/INFO]: Starting up SoundSystem...
[OptiFine] Version found: D1
[14:41:19] [Thread-7/INFO]: Initializing LWJGL OpenAL
[14:41:19] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[14:41:19] [Thread-7/INFO]: OpenAL initialized.
[14:41:19] [Sound Library Loader/INFO]: Sound engine started
[OptiFine] (Reflector) Class not present: ModLoader
[OptiFine] (Reflector) Class not present: net.minecraft.src.FMLRenderAccessLibrary
[OptiFine] (Reflector) Class not present: LightCache
[OptiFine] (Reflector) Class not present: BlockCoord
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.MinecraftForge
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.ForgeHooks
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.MinecraftForgeClient
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.ForgeHooksClient
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.FMLCommonHandler
[OptiFine] (Reflector) Class not present: cpw.mods.fml.client.FMLClientHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IItemRenderer$ItemRenderType
[OptiFine] (Reflector) Method not pesent: bgd.getSkyRenderer
[OptiFine] (Reflector) Method not pesent: bgd.getCloudRenderer
[OptiFine] (Reflector) Method not pesent: bgd.getWeatherRenderer
[OptiFine] (Reflector) Method not pesent: aqu.countEntities
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IRenderHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.DimensionManager
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.WorldEvent$Load
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Pre
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Post
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogColors
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogDensity
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$RenderFogEvent
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.eventhandler.EventBus
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.eventhandler.Event$Result
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.ForgeEventFactory
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.ChunkWatchEvent$UnWatch
[OptiFine] (Reflector) Method not pesent: atr.getBedDirection
[OptiFine] (Reflector) Method not pesent: atr.isBedFoot
[OptiFine] (Reflector) Method not pesent: atr.canRenderInPass
[OptiFine] (Reflector) Method not pesent: atr.hasTileEntity
[OptiFine] (Reflector) Method not pesent: atr.canCreatureSpawn
[OptiFine] (Reflector) Field not present: wv.captureDrops
[OptiFine] (Reflector) Field not present: wv.capturedDrops
[OptiFine] (Reflector) Method not pesent: wv.shouldRenderInPass
[OptiFine] (Reflector) Method not pesent: wv.canRiderInteract
[OptiFine] (Reflector) Method not pesent: bcm.shouldRenderInPass
[OptiFine] (Reflector) Method not pesent: bcm.getRenderBoundingBox
[OptiFine] (Reflector) Method not pesent: alq.onEntitySwing
[OptiFine] (Reflector) Method not pesent: wq.isCurativeItem
[OptiFine] (Reflector) Method not pesent: amj.hasEffect
[OptiFine] (Reflector) Method not pesent: amy.getRecordResource
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/0_glass_white/glass_pane_white.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/0_glass_white/glass_white.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/10_glass_purple/glass_pane_purple.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/10_glass_purple/glass_purple.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/11_glass_blue/glass_blue.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/11_glass_blue/glass_pane_blue.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/12_glass_brown/glass_brown.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/12_glass_brown/glass_pane_brown.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/13_glass_green/glass_green.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/13_glass_green/glass_pane_green.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/14_glass_red/glass_pane_red.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/14_glass_red/glass_red.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/15_glass_black/glass_black.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/15_glass_black/glass_pane_black.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/1_glass_orange/glass_orange.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/1_glass_orange/glass_pane_orange.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/2_glass_magenta/glass_magenta.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/2_glass_magenta/glass_pane_magenta.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/3_glass_light_blue/glass_light_blue.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/3_glass_light_blue/glass_pane_light_blue.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/4_glass_yellow/glass_pane_yellow.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/4_glass_yellow/glass_yellow.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/5_glass_lime/glass_lime.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/5_glass_lime/glass_pane_lime.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/6_glass_pink/glass_pane_pink.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/6_glass_pink/glass_pink.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/7_glass_gray/glass_gray.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/7_glass_gray/glass_pane_gray.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/8_glass_silver/glass_pane_silver.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/8_glass_silver/glass_silver.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/9_glass_cyan/glass_cyan.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/9_glass_cyan/glass_pane_cyan.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/bookshelf.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/glass.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/glasspane.properties
[OptiFine] ConnectedTextures: mcpatcher/ctm/default/sandstone.properties
[OptiFine] Multipass connected textures: false
[14:41:24] [Client thread/INFO]: Created: 1024x512 textures-atlas
[OptiFine] *** Reloading custom textures ***
[OptiFine] Loading custom colors: textures/colormap/grass.png
[OptiFine] Loading custom colors: textures/colormap/foliage.png
[14:41:32] [Client thread/INFO]: Connecting to Mc.Punchcraft.us, 25565
[14:41:36] [Client thread/INFO]: [CHAT] A new §eOptiFine§f version is available: §eHD Ultra D1§f
[14:41:36] [Client thread/INFO]: [CHAT] »»---------------==[Punchcraft]==---------------««
[14:41:36] [Client thread/INFO]: [CHAT] Use the Server Teleporter to go to our servers!
[14:41:36] [Client thread/INFO]: [CHAT] Visit our website @ www.Punchcraft.us
[14:41:36] [Client thread/INFO]: [CHAT] /Vote every day for rewards!
[14:41:36] [Client thread/INFO]: [CHAT] You get the vote rewards for every server!
[14:41:37] [Client thread/INFO]: [CHAT] -----------------------------------------------------
[14:41:37] [Client thread/INFO]: [CHAT] You currently have [0] Votes this month
[14:41:37] [Client thread/INFO]: [CHAT] -----------------------------------------------------
[14:41:44] [Client thread/ERROR]: Item entity 94 has no item?!
[14:42:13] [Client thread/INFO]: [CHAT] razer_2001 has voted and received Rewards on all Servers!
[14:42:27] [Client thread/INFO]: [CHAT]
[14:42:27] [Client thread/INFO]: [CHAT] [+] jumodude Joined
[14:42:27] [Client thread/INFO]: [CHAT] — --------------==[Punchcraft]==--------------
[14:42:27] [Client thread/INFO]: [CHAT] Visit our website @ www.Punchcraft.us
[14:42:27] [Client thread/INFO]: [CHAT] /Vote every day for rewards!
[14:42:27] [Client thread/INFO]: [CHAT] You have no new mail.
[14:42:30] [Client thread/INFO]: [CHAT] ----------------------------------------------------
[14:42:30] [Client thread/INFO]: [CHAT] Voting Sites)
[14:42:30] [Client thread/INFO]: [CHAT]
[14:42:30] [Client thread/INFO]: [CHAT] Site #1 - http://goo.gl/1wmO5z (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #2 - http://goo.gl/idvz8Y (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #3 - http://goo.gl/XEvvzi (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #4 - http://goo.gl/vhlz7x (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #5 - http://goo.gl/LVUhqS (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #6 - http://goo.gl/eGnAK6 (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #7 - http://goo.gl/5oztg8 (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] Site #8 - http://goo.gl/EP3RSZ (Left click)
[14:42:30] [Client thread/INFO]: [CHAT] You currently have [0] Votes this month
[14:42:30] [Client thread/INFO]: [CHAT] ----------------------------------------------------
[14:42:31] [Client thread/INFO]: [CHAT] [PC Auction] Attention, an auction is beginning!
[14:42:31] [Client thread/INFO]: [CHAT] [PC Auction] Finster2110 is auctioning 1 enchanted Diamond Chestplate named "Diamond Chestplate" for 1 min, 0 sec. Starting bid: $1. Bid increment: $1. Type /auction info for full details.
[14:42:31] [Client thread/INFO]: [CHAT] §3[§7Member§3] Finster2110§r §7»§r OOO
[14:42:33] [Client thread/INFO]: [CHAT] [PC Auction] bannanapealer has bid $1 on the enchanted Diamond Chestplate named "Diamond Chestplate".
[14:42:35] [Client thread/INFO]: [CHAT] [PC Auction] The auction has been cancelled.
[14:42:46] [Client thread/INFO]: Connecting to us.Mineplex.com, 25565
[14:42:48] [Client thread/INFO]: [CHAT]
[14:42:50] [Client thread/INFO]: [CHAT] 7 ULTRA HannahEngland1 c
[14:42:53] [Client thread/INFO]: [CHAT] --------------POLL--------------
[14:42:53] [Client thread/INFO]: [CHAT] How soon after buying Minecraft did you join Mineplex?
[14:42:53] [Client thread/INFO]: [CHAT]
[14:42:53] [Client thread/INFO]: [CHAT] §a1. I don't know / Other
[14:42:53] [Client thread/INFO]: [CHAT] §a2. Within first week of buying Minecraft
[14:42:53] [Client thread/INFO]: [CHAT] §a3. Within first month of buying Minecraft
[14:42:53] [Client thread/INFO]: [CHAT] §a4. I bought Minecraft to play on Mineplex!
[14:42:53] [Client thread/INFO]: [CHAT]
[14:42:53] [Client thread/INFO]: [CHAT] Click an answer to receive 400 Gems
[14:42:53] [Client thread/INFO]: [CHAT] --------------------------------
[14:43:09] [Client thread/ERROR]: ########## GL ERROR ##########
[14:43:09] [Client thread/ERROR]: @ Post render
[14:43:09] [Client thread/ERROR]: 1282: Invalid operation
#

1. A fatal error has been detected by the Java Runtime Environment:
   #

2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x28393c67, pid=3832, tid=2148
   #

3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)

4. Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode windows-x86 )

5. Problematic frame:

6. C [ig4icd32.dll+0xf3c67]
   #

7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
   #

8. An error report file with more information is saved as:

9. C:\Users\Glenn\AppData\Roaming\.minecraft\hs_err_pid3832.log
   #

10. If you would like to submit a bug report, please visit:

11. http://bugreport.sun.com/bugreport/crash.jsp

12. The crash happened outside the Java Virtual Machine in native code.

13. See problematic frame for where to report the bug.
    #
    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release