I’m using debian testing (lenny) and after the latest update my xserver no longer display fonts. This is not totally true because I can still see the fonts on gdm, but after logging in, no fonts whatsoever. It turns out the i810 Xorg driver is messed up and I have to set NoAccel to true to avoid it.
Section "Device" Identifier "Intel Corporation 82Q963/Q965 Integrated Graphics Controller" Driver "i810" BusID "PCI:0:2:0" Option "NoAccel" "true" # Option "AccelMethod" "EXA" Option "XAANoOffscreenPixmaps" EndSection
BTW I can use compiz without NoAccel before if I delete the device id from the blacklist in compiz start up script.