Ok I have downgraded xulrunner-1.9.2.12 to xulrunner-1.9.2.10 and my problem has disappeared.
So if anyone hits this problem here is a workaround that worked for me -- Eclipse hangs on code completion https://bugs.launchpad.net/bugs/674403 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs