Ok, so this is a bit of an odd issue. All of a sudden one day, whenever I'd open up the system profiler in Mac OS 9, it hard locks the system. I have done a few tests and it looks to be an issue with an extension or a control panel, as when I boot up with extensions off it doesn't lock up the system.
What is the best way to figure out the offensive extension? I have Conflict Catcher, so enabling/disabling extensions manually isn't too hard, but I would be interested if there was a way I could do this automatically.