http://bugs.winehq.org/show_bug.cgi?id=23235
--- Comment #4 from Dmitry Timoshkov dmitry@codeweavers.com 2010-06-19 00:13:49 --- (In reply to comment #3)
Can't Wine tell xlib not to try to use MIT-SHM if it isn't available?
Wine doesn't use XSHM when it's not available, probably XLib prints the warning when Wine just queries for that extension.