*** This bug is a duplicate of bug 51576 ***
Also, I briefly used the 2.6.17 kernel from edgy, which also didn't have the problem I've described (although it had other problems...) so it really seems like a bug in 2.6.15-26 -- upgrading to 2.6.15-26 in Dapper causes graphics slowdown https://launchpad.net/bugs/53898 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs