I just updated my sarge desktop today, and I can only select the built-in QT styles now. (CDE, MS Windows 9x, Motif, Motif Plus, Platinum & SGI)
There were some QT updates when I updated this morning, but I didn't pay too much attention to what got replaced. I've purged my system of old (non- c102) QT packages, and reinstalled kdelibs4. When I ldd the KDE styles (in /usr/lib/kde3/plugins/styles), I don't see any broken library dependencies. Anyone else seeing this? Anyone know how to fix it?