StidderDude

I experienced this same thing on snapshot 14w25b.

Thanks so much for your support this is a really annoying glitch,
it is now in the 1.7.1. pre-release change-log.
Thanks dinnerbone for fixing this issue.

I think this should stay a future

---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 7/19/13 3:12 PM
Description: Manually triggered debug crash

java.lang.Throwable
	at ats.k(SourceFile:1238)
	at ats.S(SourceFile:663)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdf['stidder'/49, l='MpServer', x=16.70, y=38.68, z=852.30]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (46,4,876), Chunk: (at 14,0,12 in 2,54; contains blocks 32,0,864 to 47,255,879), Region: (0,1; contains chunks 0,32 to 31,63, blocks 0,0,512 to 511,255,1023)
	Level time: 528816 game time, 30000 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: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 10 total; [tr['Slime'/1388, l='MpServer', x=24.78, y=33.00, z=856.44], rx['Pig'/16, l='MpServer', x=89.06, y=32.00, z=775.94], rx['Pig'/18, l='MpServer', x=83.16, y=32.00, z=777.97], ry['Sheep'/5, l='MpServer', x=3.72, y=32.00, z=779.63], bdf['stidder'/49, l='MpServer', x=16.70, y=38.68, z=852.30], sr['item.tile.oreGold'/8, l='MpServer', x=28.28, y=32.13, z=872.53], sr['item.tile.oreGold'/9, l='MpServer', x=27.88, y=32.13, z=874.72], sr['item.tile.oreGold'/10, l='MpServer', x=28.66, y=32.13, z=875.66], st['entity.MinecartChest.name'/12, l='MpServer', x=34.50, y=26.50, z=848.16], rx['Pig'/15, l='MpServer', x=78.06, y=32.00, z=784.06]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bda.a(SourceFile:284)
	at ats.b(SourceFile:1761)
	at ats.d(SourceFile:628)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 153218136 bytes (146 MB) / 364249088 bytes (347 MB) up to 1908932608 bytes (1820 MB)
	JVM Flags: 1 total; -Xmx2G
	AABB Pool Size: 9260 (518560 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.2
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 6290 Graphics       GL version 4.1.10834 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 257 (14392 bytes; 0 MB) allocated, 13 (728 bytes; 0 MB) used

Same thing happened to me but slightly different. I press f11 to go to fullscreen normally but when i press f11 again the screen turns black. You can still click stuff but cant see. I resolved it by closing my netbook then opening it again.

Try to re download the launcher

You need a description.

That's probably cause there drowning, but I could be wrong.