Problem of JVM with Eclipse Ganymede
It appear that the JVM (under Linux apparently (I've only tested on it)) has some problems that makes Eclipse crash a lots of time (just by saving a file, for example).
It's very boring.
I've found a solution to avoid this problem, just edit the eclipse.ini file and add this line :
-XX:CompileCommand=exclude,org/eclipse/jdt/internal/compiler/lookup/ParameterizedMethodBinding,<init>
Normally, your problem is now away ! :)