When I connect to a multiplayer/online server, the world loads in properly for less than/around a second and then crashes to the launcher with this error and an accompanying log file (attached):

LAUNCHER ERROR:

[23:51:51] [Client thread/INFO]: Setting user: Russellian
[23:51:51] [Client thread/INFO]: (Session ID is token:7b4c0f50c4584f899e39f2c071176e1d:f51719f27a294ce1a5eeed28710ff365)
[23:51:53] [Client thread/INFO]: LWJGL Version: 2.9.1
[23:51:53] [Client thread/INFO]: Reloading ResourceManager: Default
[23:51:54] [Sound Library Loader/INFO]: Starting up SoundSystem...
[23:51:54] [Thread-6/INFO]: Initializing LWJGL OpenAL
[23:51:54] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[23:51:54] [Thread-6/INFO]: OpenAL initialized.
[23:51:54] [Sound Library Loader/INFO]: Sound engine started
[23:51:57] [Client thread/INFO]: Created: 512x512 textures-atlas
[23:52:03] [Client thread/INFO]: Connecting to 199.202.219.71, 25565
#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000000000000, pid=544, tid=9368
   #
3. JRE version: 6.0_29-b11
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C 0x0000000000000000
   #
7. An error report file with more information is saved as:
8. C:\Users\bertrand\AppData\Roaming\.minecraft\hs_err_pid544.log
   #
9. If you would like to submit a bug report, please visit:
10. http://java.sun.com/webapps/bugreport/crash.jsp
    #
    AL lib: (EE) alc_cleanup: 1 device not closed

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Steps to Reproduce:
Launch launcher
Launch game
Click Multiplayer
Connect to Multiplayer Server
Load chunks/hear sound effects/music
Client Crashes, kicks back out to launcher