Intermittent temporary freezes

My computer intermittently freezes temporarily, sometimes for only a second or two, sometimes for a minute or more. Often there is no visual indication of a problem, but sometimes during the longer freezes, the UltraMon move window button on the active window will enlarge and turn black. When the freeze ends, operations resume normally. Sometimes I can go several hours with no problem, sometimes it happens several times within a short amount of time. Since it's so sporadic, I'm not sure quite when it started, but I'd guess about a month or so ago. I don't know if this problem is malware related, but I thought I would start there.

I also discovered this morning that I am unable to boot into safe mode via F8. It just blows right on by and loads Windows normally. I attempted it several times. I've never tried to use safe mode on this machine before (I've had it about 6 months), so I don't know if it's always been that way. Maybe not related, but I thought it was odd.

I ran the read me instructions on May 7th and waited to see if it helped, but it doesn't seem to be any better. The attached logs are from that day.

Thanks for any assistance you can provide.

 

I have completed the cleanup as instructed. Thank you very much for checking the logs.