I'm on Arch64 and also have the same problem. I asked on #awesome (oftc) and apparently it's a problem with xcb-util.
Awesome currently needs xcb-util 0.3.3, where as i have 0.3.4 installed but i can't remove it due to dependancies: firefox requires xulrunner = 1.9.0.8 xulrunner requires startup-notification >= 0.9 startup-notification requires xcb-util >= 0.3.4 Any ideas?
