On Thursday 30 June 2011, bugzilla-daemon@freedesktop.org wrote:
https://bugs.freedesktop.org/show_bug.cgi?id=38800
Summary: glXSwapBuffersMscOML is slow on AMD Fusion but not on Intel 945 w/Atom
I should probably add that I'm subscribed to this mailing list, and I'm also able to make my way onto IRC if semi-interactive debugging would help.