Description of problem: See gnome bug #333678 - On a 64 bit arch gnome applications crash with accessibility turned on. Happened after todays update atk-1.11.2-1.2 but it has been awhile since my last update (around test 3 timeframe).
ok, I can't easily see where this comes from. I do see that the crash happens with 1.7.6, and does not happen with 1.7.5. The only changes between 1.7.5 and 1.7.6 were memleak fixes. So one option would be to just revert to 1.7.5 and live with some leaks.
Reverted the problematic part of the diff in 1.7.6-2