I'm assuming you're running Firefox 3.0 Alpha 8 from Gutsy. It seems you're experiencing Mozilla Bug #386759: https://bugzilla.mozilla.org/show_bug.cgi?id=386759 (could you confirm ?)
If it is indeed that bug, it has been fixed between Alpha 8 and Beta 1 (soon to enter Hardy, waiting sponsor/review). I'm running a post Beta 1 build, and I can't reproduce it, while I clearly remember a kerning issue at the "dots" of some URLs or at the final "..." of URLs longer than the URL bar during the last few Alphas. -- disconcerting URL bar effect: unstable font kerning https://bugs.launchpad.net/bugs/164569 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