Same exact problem as reported in these threads ("the video memory manager has encountered a fatal error"):
http://www.displaylink.org/forum/showthread.php?p=1555
http://forum.parallels.com/showthread.php?t=100761
Running a MacBook Pro with OS 10.6.8, an AMD Radeon 6750M GPU, Parallels 6, Windows 7 Ultimate x64 and DL-195 drivers, all at the latest versions and updates in both operating systems as of last night.
Parallels said they contacted DL last year to discuss, but it seems from these threads and several others on the web that there has not been any real resolution to the problem. Parallels says the problem is with DL drivers, what does DL say? :P
I will be happy to provide dump files, if someone can tell me where to retrieve them on the Windows partition or if Parallels creates the dump.