Comment 9 for bug 518422

So if I'm reading the trace right - the issue is with firefox not getting the read it expects from xwindows after trying to set permissions (MIT-MAGIC-COOKIE-1 being user based protection)
25377 writev(3, [{"l\0\v\0\0\0\22\0\20\0\0\0", 12}, {"", 0}, {"MIT-MAGIC-COOKIE-1", 18}, {"\0\0", 2}, {"\0273\203\3672'\0\367\360\375\" \377s\17\256", 16}, {"", 0}], 6) = 48
25377 read(3, 0xb7603a40, 8) = -1 EAGAIN (Resource temporarily unavailable)
and every read after that failing the same way. ??