This is the default setting for metacity and compiz and metacity has used this shortcut for years. If you want to use GIMP's shortcut instead go to System->Preferences->Windows and change the movement key.
** Changed in: compiz (Ubuntu) Status: New => Won't Fix -- Compiz Shouldn't Take Priority for Certain Shortcuts https://bugs.launchpad.net/bugs/427608 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs