Iain, thanks for the response. I'm not actually sure whether I had WebKitGTK 2.4.4 or 2.4.5, and I can't check now since I had to drop back to Trusty since this bug affected me greatly. I'll stay on Trusty for the moment - I'll be curious to see if any others report this behavior. It definitely occurred even after a completely clean install from the latest Utopic daily ISO.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1369693 Title: WebKit-based applications are unusably sluggish in Utopic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/webkitgtk/+bug/1369693/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs