http://bugs.winehq.org/show_bug.cgi?id=29982
--- Comment #7 from Felipe Contreras felipe.contreras@gmail.com 2012-03-24 23:14:26 CDT --- Same here, also Arch Linux x86_64:
mesa 8.0.2-1 libgl 8.0.2-1 libglapi 8.0.2-1 ati-dri 8.0.2-1 xorg-server 1.12.0-1 xf86-video-ati 6.14.3-2 wine 1.5.0-1 kernel 3.1.5 (but I tried 3.3 as well)
Why do you say the issue is mesa? Wine is clearly stuck in a deadlock.