Minecraft randomly crashing

Game randomly crashes and or shuts down randomly heres the crash report

---- Minecraft Crash Report ----
// Oops.

Time: 7/4/13 12:24 PM
Description: Unexpected error

java.lang.NullPointerException
	at aqx.c(SourceFile:78)
	at bfy.b(SourceFile:1257)
	at bfq.a(SourceFile:959)
	at bfq.b(SourceFile:743)
	at net.minecraft.client.Minecraft.K(SourceFile:597)
	at net.minecraft.client.Minecraft.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at aqx.c(SourceFile:78)
	at bfy.b(SourceFile:1257)
	at bfq.a(SourceFile:959)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdv['IHasDoughnut'/462, l='MpServer', x=-259.00, y=62.62, z=209.20]]
	Chunk stats: MultiplayerChunkCache: 400
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-261,61,210), Chunk: (at 11,3,2 in -17,13; contains blocks -272,0,208 to -257,255,223), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 909340 game time, 7185 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 160 total; [qg['Bat'/274, l='MpServer', x=-270.78, y=21.00, z=283.25], qj['Cow'/273, l='MpServer', x=-259.16, y=73.00, z=264.16], ru['Creeper'/272, l='MpServer', x=-268.97, y=28.00, z=266.63], sh['Spider'/283, l='MpServer', x=-245.63, y=25.00, z=265.34], qj['Cow'/282, l='MpServer', x=-247.53, y=71.00, z=237.53], qj['Cow'/281, l='MpServer', x=-246.47, y=71.00, z=236.47], qj['Cow'/280, l='MpServer', x=-247.50, y=69.00, z=238.47], ru['Creeper'/287, l='MpServer', x=-251.34, y=47.00, z=278.94], ru['Creeper'/286, l='MpServer', x=-242.53, y=62.00, z=271.69], qj['Cow'/285, l='MpServer', x=-250.44, y=67.00, z=256.25], ru['Creeper'/284, l='MpServer', x=-243.44, y=26.00, z=267.59], ru['Creeper'/258, l='MpServer', x=-280.40, y=25.00, z=240.34], ru['Creeper'/259, l='MpServer', x=-281.36, y=27.00, z=241.72], qo['Sheep'/256, l='MpServer', x=-284.09, y=69.00, z=226.78], qo['Sheep'/257, l='MpServer', x=-286.81, y=69.00, z=224.44], ru['Creeper'/260, l='MpServer', x=-282.50, y=27.00, z=251.50], sf['Skeleton'/261, l='MpServer', x=-280.73, y=27.00, z=242.50], qo['Sheep'/271, l='MpServer', x=-264.47, y=67.00, z=132.38], qj['Cow'/304, l='MpServer', x=-235.38, y=74.00, z=279.13], qi['Chicken'/308, l='MpServer', x=-216.72, y=73.00, z=136.31], ru['Creeper'/311, l='MpServer', x=-221.50, y=39.00, z=147.50], sj['Zombie'/313, l='MpServer', x=-209.67, y=50.00, z=187.34], ru['Creeper'/312, l='MpServer', x=-212.50, y=18.00, z=180.50], sh['Spider'/315, l='MpServer', x=-217.47, y=20.00, z=192.34], sf['Skeleton'/314, l='MpServer', x=-208.89, y=50.00, z=188.39], rj['entity.MinecartChest.name'/317, l='MpServer', x=-222.50, y=33.34, z=246.56], ru['Creeper'/316, l='MpServer', x=-214.50, y=17.00, z=213.50], ru['Creeper'/318, l='MpServer', x=-219.00, y=38.00, z=277.69], qi['Chicken'/295, l='MpServer', x=-225.44, y=69.00, z=132.56], qi['Chicken'/296, l='MpServer', x=-232.53, y=66.72, z=148.16], sf['Skeleton'/297, l='MpServer', x=-232.50, y=46.00, z=193.84], qn['Pig'/298, l='MpServer', x=-227.41, y=64.00, z=189.56], qi['Chicken'/299, l='MpServer', x=-237.50, y=70.00, z=220.50], rh['item.item.egg'/300, l='MpServer', x=-236.84, y=72.13, z=220.41], qj['Cow'/301, l='MpServer', x=-225.38, y=72.52, z=254.26], qg['Bat'/302, l='MpServer', x=-241.31, y=25.67, z=277.22], qg['Bat'/303, l='MpServer', x=-235.47, y=26.02, z=278.06], rj['entity.MinecartChest.name'/338, l='MpServer', x=-205.50, y=30.50, z=281.50], qj['Cow'/337, l='MpServer', x=-204.53, y=72.00, z=248.50], qj['Cow'/336, l='MpServer', x=-203.47, y=72.00, z=248.47], qg['Bat'/351, l='MpServer', x=-189.16, y=44.05, z=158.34], qg['Bat'/350, l='MpServer', x=-186.25, y=46.00, z=153.19], sj['Zombie'/347, l='MpServer', x=-187.50, y=30.00, z=143.50], qg['Bat'/320, l='MpServer', x=-213.69, y=41.42, z=291.22], sf['Skeleton'/334, l='MpServer', x=-196.50, y=46.00, z=197.09], qj['Cow'/335, l='MpServer', x=-201.47, y=72.00, z=248.47], qg['Bat'/332, l='MpServer', x=-209.28, y=37.89, z=151.00], qi['Chicken'/333, l='MpServer', x=-205.66, y=73.00, z=176.34], sh['Spider'/331, l='MpServer', x=-197.50, y=29.53, z=149.91], sj['Zombie'/110, l='MpServer', x=-340.50, y=13.00, z=173.78], sf['Skeleton'/111, l='MpServer', x=-338.50, y=13.00, z=171.50], qg['Bat'/108, l='MpServer', x=-338.72, y=10.10, z=172.97], qg['Bat'/106, l='MpServer', x=-337.38, y=10.10, z=175.44], qi['Chicken'/356, l='MpServer', x=-190.53, y=80.00, z=160.31], sj['Zombie'/118, l='MpServer', x=-340.69, y=18.00, z=257.44], ru['Creeper'/357, l='MpServer', x=-184.94, y=21.00, z=190.69], qi['Chicken'/117, l='MpServer', x=-335.78, y=71.00, z=257.38], qi['Chicken'/358, l='MpServer', x=-187.59, y=77.00, z=178.19], qi['Chicken'/116, l='MpServer', x=-338.41, y=66.00, z=232.44], qi['Chicken'/113, l='MpServer', x=-340.59, y=67.00, z=170.53], qg['Bat'/112, l='MpServer', x=-338.22, y=9.45, z=175.53], ru['Creeper'/127, l='MpServer', x=-323.44, y=9.00, z=167.84], qj['Cow'/126, l='MpServer', x=-335.50, y=70.00, z=134.50], ru['Creeper'/137, l='MpServer', x=-325.50, y=9.00, z=177.50], qi['Chicken'/136, l='MpServer', x=-321.47, y=63.00, z=161.59], sh['Spider'/138, l='MpServer', x=-320.03, y=12.00, z=177.00], qn['Pig'/140, l='MpServer', x=-322.16, y=63.00, z=178.06], qn['Pig'/143, l='MpServer', x=-323.03, y=68.00, z=238.06], qi['Chicken'/142, l='MpServer', x=-325.63, y=63.00, z=219.44], ru['Creeper'/129, l='MpServer', x=-330.59, y=9.00, z=165.56], sj['Zombie'/128, l='MpServer', x=-328.28, y=9.00, z=172.97], ru['Creeper'/131, l='MpServer', x=-334.50, y=9.00, z=162.50], qg['Bat'/130, l='MpServer', x=-330.78, y=10.10, z=171.22], ru['Creeper'/133, l='MpServer', x=-335.16, y=9.00, z=174.25], ru['Creeper'/132, l='MpServer', x=-332.93, y=9.00, z=164.39], ru['Creeper'/134, l='MpServer', x=-332.59, y=9.00, z=163.06], ru['Creeper'/152, l='MpServer', x=-317.94, y=9.00, z=169.63], qr['Squid'/153, l='MpServer', x=-317.06, y=60.31, z=165.13], qr['Squid'/154, l='MpServer', x=-319.22, y=60.41, z=164.47], qr['Squid'/155, l='MpServer', x=-314.50, y=60.36, z=165.65], qr['Squid'/156, l='MpServer', x=-313.51, y=61.00, z=167.69], qn['Pig'/157, l='MpServer', x=-317.56, y=64.00, z=188.91], qi['Chicken'/158, l='MpServer', x=-311.56, y=64.00, z=234.47], qj['Cow'/159, l='MpServer', x=-305.31, y=69.00, z=229.59], qn['Pig'/144, l='MpServer', x=-334.03, y=69.00, z=237.16], qi['Chicken'/145, l='MpServer', x=-323.53, y=71.00, z=250.66], qn['Pig'/146, l='MpServer', x=-334.31, y=74.00, z=275.22], qi['Chicken'/150, l='MpServer', x=-314.53, y=68.00, z=159.47], qj['Cow'/175, l='MpServer', x=-301.75, y=69.00, z=223.07], sj['Zombie'/163, l='MpServer', x=-309.94, y=52.00, z=257.50], sf['Skeleton'/162, l='MpServer', x=-306.34, y=24.00, z=276.19], qn['Pig'/161, l='MpServer', x=-309.47, y=68.00, z=256.69], qn['Pig'/160, l='MpServer', x=-316.03, y=71.00, z=250.50], sf['Skeleton'/164, l='MpServer', x=-307.63, y=22.00, z=287.78], qj['Cow'/186, l='MpServer', x=-299.25, y=69.00, z=223.09], qn['Pig'/187, l='MpServer', x=-291.63, y=69.00, z=223.81], qj['Cow'/184, l='MpServer', x=-296.81, y=69.00, z=223.09], qj['Cow'/185, l='MpServer', x=-300.55, y=69.00, z=223.07], qj['Cow'/190, l='MpServer', x=-302.93, y=69.00, z=227.91], qj['Cow'/191, l='MpServer', x=-300.57, y=69.00, z=227.91], qj['Cow'/188, l='MpServer', x=-299.66, y=69.00, z=227.93], qj['Cow'/189, l='MpServer', x=-302.93, y=69.00, z=226.66], qj['Cow'/178, l='MpServer', x=-298.21, y=69.00, z=223.07], qj['Cow'/179, l='MpServer', x=-295.09, y=69.00, z=223.07], qj['Cow'/176, l='MpServer', x=-302.91, y=69.00, z=223.09], qn['Pig'/177, l='MpServer', x=-293.91, y=69.00, z=223.07], qn['Pig'/182, l='MpServer', x=-290.38, y=69.00, z=223.09], qo['Sheep'/183, l='MpServer', x=-297.09, y=69.00, z=219.94], qn['Pig'/180, l='MpServer', x=-292.75, y=69.00, z=223.09], qn['Pig'/181, l='MpServer', x=-289.09, y=69.00, z=223.09], qj['Cow'/205, l='MpServer', x=-301.73, y=69.00, z=227.91], qj['Cow'/204, l='MpServer', x=-296.84, y=69.00, z=226.72], qj['Cow'/207, l='MpServer', x=-295.09, y=69.00, z=225.55], qj['Cow'/206, l='MpServer', x=-299.34, y=69.00, z=224.13], qj['Cow'/201, l='MpServer', x=-300.62, y=69.00, z=226.50], qj['Cow'/200, l='MpServer', x=-299.52, y=69.00, z=226.46], qj['Cow'/203, l='MpServer', x=-301.81, y=69.00, z=224.22], qj['Cow'/202, l='MpServer', x=-302.93, y=69.00, z=225.47], qn['Pig'/197, l='MpServer', x=-293.91, y=69.00, z=225.53], qj['Cow'/196, l='MpServer', x=-297.34, y=69.00, z=224.18], qj['Cow'/199, l='MpServer', x=-301.81, y=69.00, z=225.40], qj['Cow'/198, l='MpServer', x=-296.31, y=69.00, z=227.91], qn['Pig'/193, l='MpServer', x=-293.91, y=69.00, z=226.78], qn['Pig'/192, l='MpServer', x=-289.09, y=69.00, z=224.50], qn['Pig'/195, l='MpServer', x=-293.91, y=69.00, z=227.91], qj['Cow'/194, l='MpServer', x=-295.09, y=69.00, z=227.91], qn['Pig'/220, l='MpServer', x=-289.09, y=69.00, z=227.91], bdv['IHasDoughnut'/462, l='MpServer', x=-259.00, y=62.62, z=209.20], qj['Cow'/221, l='MpServer', x=-299.44, y=69.00, z=225.48], qn['Pig'/222, l='MpServer', x=-295.07, y=69.00, z=224.24], qj['Cow'/223, l='MpServer', x=-298.05, y=69.00, z=225.29], qj['Cow'/216, l='MpServer', x=-298.13, y=69.00, z=226.62], qj['Cow'/217, l='MpServer', x=-300.52, y=69.00, z=225.38], qn['Pig'/218, l='MpServer', x=-290.63, y=69.00, z=227.91], qo['Sheep'/219, l='MpServer', x=-291.53, y=69.00, z=235.34], qj['Cow'/212, l='MpServer', x=-301.78, y=69.00, z=226.63], qj['Cow'/213, l='MpServer', x=-302.91, y=69.00, z=224.19], qn['Pig'/214, l='MpServer', x=-291.94, y=69.00, z=227.05], qn['Pig'/215, l='MpServer', x=-290.80, y=69.00, z=226.43], qj['Cow'/208, l='MpServer', x=-298.33, y=69.00, z=227.69], qn['Pig'/209, l='MpServer', x=-293.91, y=69.00, z=224.27], qj['Cow'/210, l='MpServer', x=-296.38, y=69.00, z=224.16], qj['Cow'/211, l='MpServer', x=-300.61, y=69.00, z=224.21], sj['Zombie'/235, l='MpServer', x=-289.50, y=27.00, z=260.50], qo['Sheep'/234, l='MpServer', x=-295.84, y=63.00, z=242.84], qo['Sheep'/233, l='MpServer', x=-298.25, y=63.00, z=251.13], rv['Enderman'/232, l='MpServer', x=-293.94, y=27.00, z=251.66], rv['Enderman'/231, l='MpServer', x=-292.50, y=27.00, z=249.50], ru['Creeper'/230, l='MpServer', x=-291.50, y=27.00, z=247.50], sf['Skeleton'/229, l='MpServer', x=-289.50, y=19.00, z=252.50], ru['Creeper'/228, l='MpServer', x=-293.50, y=21.00, z=252.50], ru['Creeper'/227, l='MpServer', x=-301.50, y=24.00, z=253.50], qn['Pig'/226, l='MpServer', x=-290.41, y=69.00, z=224.97], qj['Cow'/225, l='MpServer', x=-296.49, y=69.00, z=225.46], qn['Pig'/224, l='MpServer', x=-292.59, y=69.00, z=224.97], qo['Sheep'/254, l='MpServer', x=-286.50, y=69.00, z=223.09], qo['Sheep'/255, l='MpServer', x=-283.84, y=66.00, z=239.63], qi['Chicken'/252, l='MpServer', x=-282.33, y=66.00, z=136.54], qo['Sheep'/253, l='MpServer', x=-287.91, y=69.00, z=223.09], qi['Chicken'/251, l='MpServer', x=-279.44, y=63.00, z=140.66]]
	Retry entities: 0 total; []
Stacktrace:
	at bds.a(SourceFile:282)
	at net.minecraft.client.Minecraft.b(SourceFile:1881)
	at net.minecraft.client.Minecraft.run(SourceFile:540)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.5.2
	Operating System: Windows NT (unknown) (x86) version 6.2
	Java Version: 1.6.0_37, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
	Memory: 323882320 bytes (308 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 22390 (1253840 bytes; 1 MB) allocated, 4 (224 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	LWJGL: 2.4.2
	OpenGL: ATI Radeon HD 3200 Graphics GL version 3.3.11653 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 5369 (300664 bytes; 0 MB) allocated, 44 (2464 bytes; 0 MB) used