Game Crashes When Joining . leaving. and joining another/ the same server

Hello
My game is crashing on Ubuntu 14.04 LTS when on minecraft 1.7.x+
I can reproduce the issue by
1.Loging Into Minecraft
2.Joining a multiplayer server
3.Leaving a multiplayer server
4. Joining a single player world / multiplayer world
The error message comes up 5-10 minutes later saying
minecraft internal exception java.io.ioexception error while write(...): Broken pipe