Xscreensaver 3.29 is out, and fixes many bugs with OpenGL xscreensaver hacks. Upgrading seems to fix most of the GL-related "Xscreensaver crashing the server" problems I've been having.
That's odd. What graphics card, and did you happen to upgrade something X or kernel related at the same time?
In any case, xscreensaver-3.29-1 should be in the next rawhide release.
Nothing else was upgraded. It has a Matrox G400 Max. At any rate, thanks for upgrading it.