Hmmm....sounds like there are too many background tasks/programs going.
Like I said, use the Startup feature in Ccleaner to disable unnecessary programs from starting on boot.
Also, you shouldn't run Ccleaner everyday. This can actually slow down your computer. It's like changing the oil in your car everyday before you drive to work. Periodically is often enough (maybe twice a month for Ccleaner; 10,000 miles for your car...lol).
I doubt malware is slowing it down since you said it is a clean install (scan with MBAM, nonetheless. If it finds anything, I'll send you to the AII forum). And a week wouldn't be long enough to cause a considerable amount of file framentation (defragging is still a good practice, but it probably won't affect much in this specific case).
Just about the only thing that leaves is having too many background tasks/programs running.
Download and run DDS
. It will generate two logs with some useful information like current running processes and installed programs. Post the logs here in your topic (don't attach them, but copy and paste the contents into a reply). This will help me see what is running, and possibly find what is slowing your computer so much. Don't worry...DDS is non-invasive...it just scans and provides the logs. That's it.
I'm now wishing that your HJT log hadn't been removed, as it would have proved somewhat useful in seeing the running processes. Hopefully we will not be scolded for running DDS. It's just the quickest way to see what's running and installed (HJT is malware-oriented whereas DDS is more generally helpful).
Oh, another thing....have you downloaded and installed the latest Windows 7 drivers for your system (available from your manufacturer's website)? Another thing to check off the list...
Edited by keyboardNinja, 24 February 2010 - 10:37 PM.