Crash connecting to server with slow upload speed

Our server was throttled to nothing by Comcast. We'd just gotten it back, but was probably still glitchy. After timing out a few times, I got in, but then this crashed soon after.

Minecraft has crashed!      
      ----------------------      

Minecraft has stopped running because it encountered a problem; Rendering screen

A full error report has been saved to C:\Users\Matt\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-15_22.49.36-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(



--- BEGIN ERROR REPORT 5d7dc288 --------
Full report at:
C:\Users\Matt\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-15_22.49.36-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 2/15/13 10:49 PM

-- Head --
Stacktrace:
	at aul.b(SourceFile:168)
	at aul.e(SourceFile:164)
	at aym.a(SourceFile:51)

-- Screen render details --
Details:
	Screen name: aym
	Mouse location: Scaled: (423, 221). Absolute: (847, 587)
	Screen size: Scaled: (840, 515). Absolute: (1680, 1030). Scale factor of 2
Stacktrace:
	at ban.b(SourceFile:774)
	at net.minecraft.client.Minecraft.J(SourceFile:605)
	at net.minecraft.client.Minecraft.run(SourceFile:534)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.4.7
	Operating System: Windows Vista (amd64) version 6.0
	Java Version: 1.6.0_35, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 311849824 bytes (297 MB) / 520749056 bytes (496 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	LWJGL: 2.4.2
	OpenGL: GeForce GT 430/PCIe/SSE2 GL version 4.2.0, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: Rocrafter4-Pack.zip
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

java.lang.NullPointerException
	at aul.b(SourceFile:168)
	at aul.e(SourceFile:164)
	at aym.a(SourceFile:51)
	at ban.b(SourceFile:774)
	at net.minecraft.client.Minecraft.J(SourceFile:605)
	at net.minecraft.client.Minecraft.run(SourceFile:534)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 3e624c9c ----------