[Bungleau]

LK,

If it suddenly stops while you're typing, odds are that the CPU itself is now working on something else, and needs to get caught up.

The question is.... what is it working on?

Take a look at all the programs in Task Manager and see what extraneous stuff there is. Post a listing here if you want, or do some googling on the programs. For example, there's one on my system called "stimon". Turned out it's a still image monitor for my scanner, but when it first showed up, I was nervous...

Spybot and Ad Aware will help get rid of many spyware and adware programs. Other stuff can still sneak in, though... always be skeptical.

Some good stuff can be in there as well. Things like virus scanners, software update programs, defrag, and more can be scheduled to run, and will do so at that time.

It could also be Windows expanding your swap file (if needed). That's why I prefer to have a fixed size swap file (aka virtual memory) -- no problems with Windows trying to help me.

Next time it happens, I'd check to see what else is running. That will be your biggest indicator of what you can do to get rid of it.