I just upgraded my Xsun to the 3.3.5-1 version in unstable, and I still experience the 'white screen of death'. :)
strace reveals the code being kill by a SEGV just after checking on the PEX extensions. The 3.3.2.3a Xsun24 performs the same check, but the successfully goes on to check the security policy (/usr/X11R6/lib/X11/xserver/SecurityPolicy) Let me know if you have any test builds you want me to try. -- Stephen --- "If 8-year-old boys discharging loaded firearms into their own legs isn't necessary to the maintenance of a well-regulated militia, I don't know what is." - Randal Cummings as reported in The Onion, 25/5/99