Sorry for not following up, but I discovered that my newly upgraded system has a more serious problem, as it resets all by itself, sometimes after few minutes from start. I suspect something broken related to my ATI Radeon video card.
Thank you for the instructions on how to diagnose this problem. However, since it will take time to do so, I will try to follow up on this issue as soon as I can, but not immediately. By the way, "while you can run "killall firefox" even on a nonfunctional console, you cannot run ps aux | grep firefox" blindly :) -- firefox crash when rearranging bookmarks https://bugs.launchpad.net/bugs/225425 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