just for the record, The issue was caused by the sabnzbplusd addon. My sabnzbplusd was crashed but the firefox-addon was trying to contact the server every second. Thats waht the strace is telling from #1.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/927547 Title: [12.04] latest firefox ( 11.0~b2+build1-0) is always producing 100% cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/927547/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs