Re: 7-current. is it possible to compile?
It appears that I'm OK now. I played Sauer for half an hour or so, and rebooted a couple of times and tried again and no problems or panics.
Sorry for the noise.
Edit: I can tell you that it was neither the hint.agp.0.disabled="1" nor the /usr/local/lib/compat path (which was already being done). I've undone those changes and I still can't reproduce the problem.
Strange, because it happened two out of two tries last night. I'll never understand how computers can be like that. Maybe I just needed a cold boot or something.