I've had an IBM PC133 128MB chip of memory that I've been using for a while. Works fine. I just recently bought another Corsair PC133 128MB chip, and I started getting random system freezes. I tried taking out the IBM one and now my system works fine again. Does having different brands of memory on the same mobo screw it up somehow? I've run memory tester programs and they said the memory is fine but if I have both in I get complete system freezes, Win2K doesn't even realize it crashed (and thus doesn't scandisk on the next boot). Help!