@Alex: as I said, turning off Sync to VBlank has not fixed the problem; this doesn't seem like a duplicate of that bug, which is specifically about Sync to VBlank being off.
** This bug is no longer a duplicate of bug 763005 Fglrx with Compiz's "Sync to Vblank" makes Unity/Compiz plugins to crawl -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/757680 Title: Unity extremely slow on Toshiba Satellite C650D -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs