Comment 14 for bug 563647

Yes, it uses ~/.eclipse, else it would not be there in the first place. It is used for storing generic things that are not "workspace" specific and it also stores locally installed plugins there.

Also, if you still experience the crashes with the Ubuntu installed eclipse after removing libraries in ~/.eclipse, then make sure you do not have old xulrunner installations on your system (e.g. xulrunner-1.9.1)

~Niels