YaST2 always in endless loop with "abandon all changes"

I have SuSE 8.2, all the latest updates and patches. Whatever I do with YaST (the GUI version, v2.7.30-1) it always goes into an endless loop of "abandon all changes" dialogs, regardsless what I was using YaST for and regardless of whether I click OK or cancel in the "abandon all changes" dialogs. It's even impossible to quit YaST. The problem doesn't occur with the text version. ????