OK, this bug is kond of wierd.

I've played a few games of p23 now. In my latest game, the PC had entered the pyramid and was ready to climb to level 2. Then I saved the game and quit.

The next time I tried to launch ADOM, nothing happened but Win7 slowed down enormously. It took a few seconds to launch task manager, where I saw adom.exe using about 10k of memory and 25% of CPU but not doing anything, even after several minutes. When I stopped the process, Win7 returned to normal. This now happens every time I try to launch ADOM, even after shutting down my computer.

I don't know if there's any information in my installation that can help you reproduce this-- let me know if you want any of the files. I don't think it's the savegame since I never even saw ADOM open a window.