Put the summary of the bug you're having here
What I expected to happen was...:
I would be able to join a server.
What actually happened was...:
Minecraft closed
Steps to Reproduce:
1. Go onto multiplayer.
2. Join a server
3. It will close
Comments 2
As a side note, your Java version is out of date. Please update your Java to the latest version (1.7.0_25): http://www.java.com/en/download/. Keep in mind that when using a 32-bit browser on a 64-bit OS the automatic version detection will only show the 32-bit version of Java, the 64-bit version needs to be downloaded manually: http://www.java.com/en/download/manual.jsp.
Incomplete without crash report. Please attach crash reports in the future to tickets about a crash.