XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 39 requests (37 known processed) with 0 events remaining.
sounds to me like either:
1/ you don't have video drivers installed, so you're using indirect rendering ( which is slow as fuck )
2/ you're using a graphics chipset that shares memory with the main RAM, and your VideoRam( the amount of memory given to the graphics chipset ) is too low
before going on "blind fixes", can you post the output of
glxinfo
please?

also, look in your /etc/X11/xorg.conf for a line with VideoRam (if there's no such line, there's no big deal, forget about it)