https://bugs.freedesktop.org/show_bug.cgi?id=41668
--- Comment #9 from dmotd inaudible@simplesuperlativ.es 2011-10-11 19:42:06 PDT --- (In reply to comment #5)
Do you have records of when you updated the kernel last? What kernel version did you have before you started experiencing this issue?
it has been occurring since i made the transition to gnome-shell about two months ago, but i believe it was occurring before in another compositing environment (enlightenment e17 with the ecomporph /ecomp extension - a compiz fork) which i wrongly attributed to the unstable nature of the e17/ecomorph codebase.. i didn't really test that for very long, although i can tell you that i tested it in march of this year, and some quick googling suggests that it would have been running with a 2.6.37 kernel on archlinux then. sorry i don't have package logs going back that far.