[kennedy]

For diagnosing intermittent problems, is there any Activity Monitor variant with logging such that you can scroll back in time and see what spiked when XXX happened?

(e.g., my mouse stops moving for some strange reason... unfortunately, it never seems to do it while Activity Monitor is on top, so I can never see what's soaking up the CPU cycles when that happens.)

[MacNNUK]

My mouse used to freeze because it was fed through a 4 way USB adaptor, removed adaptor, no more problems.

[P]

I also suspect a USB problem, but to answer your question: If you open the terminal, you can run the command top in logging mode. It's a bit tricky to get it to do what you want, so I suggest you read the man page, but in essence:

Code:
top -l 0 > logfile.txt