I can confirm this it really speeds up things again! Further more there is an environment variable that you can set to override the graphicssytem's default setting (see https://bugs.kde.org/show_bug.cgi?id=248672#c2), although it states that you should use it at own risk, so it might break stuff.
export QT_GRAPHICSSYSTEM="native" ** Bug watch added: KDE Bug Tracking System #248672 https://bugs.kde.org/show_bug.cgi?id=248672 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1077965 Title: qt4 applications over X forward run slower than with Ubuntu 10.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/1077965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
