I have the same problem. I'm using Firefox 1.5.0.4 and this alerts doesn't disappear when I remove my plugins. I tried to debug how you discriped but I wasn't able to get it crash during the debugger was running.
Starting firefox as root doesn't work as well. It tells me staring firefox without -H using sudo is no good idea, it will behave as -H would be used an then im getting an error (something about the x-server) -- firefox doesn't run properly and crashes badly https://launchpad.net/bugs/46547 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
