Incomplete “cleaning"

I posted this awhile ago, but it hasn't appeared. This is a repost.

After multiple times running Ccleaner after exiting Firefox I still get the following results (please see the attached). 5 MB or more never get removed. Is there an option I have neglected activating, or is the current version I just installed not fully removing what it should? This never was the case in the past. I’ve been using the free version. Is this an indication that there is a back door left open by Microsoft to monitor my system?

post-69021-0-03054900-1394753586_thumb.jpg

post-69021-0-70091800-1394753588_thumb.jpg

Try restarting the computer into safe mode and running CCleaner, then rebooting and seeing if the issue persists. It is probably a locked file

I thought I'd seen a 5MB issue before with IE Temp Internet files.

Could the "Suggested Sites" setting in IE still be the cause ...

http://forum.piriform.com/index.php?showtopic=17693&do=findComment&comment=114110