did you have compiz/beryl installed in feisty? Further, please try to disable all extensions temporarily by starting firefox from the commandline:
firefox -safe-mode Thanks, - Alexander ** Changed in: firefox (Ubuntu) Importance: Undecided => Low Status: Confirmed => Incomplete -- Firefox open two tabs when double-click in tab bar https://bugs.launchpad.net/bugs/173083 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs