You can download manually the previous version from here: https://launchpad.net/ubuntu/natty/+source/qt4-x11/4:4.7.1-0ubuntu9
And replace the libQtOpenGL files in /usr/lib/ It's ugly but it works. -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qt4-x11 in ubuntu. https://bugs.launchpad.net/bugs/724867 Title: current qtopengl breaks virtualbox -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs