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It was still working, but just crawling along and getting worse everyday. The problem(s)? Running out of disk space (less than 5% free), old version(s) of various anti-virus programs still installed, Vista (need we say more), pending Windows Updates not installed yet.
Solution: after cleaning up old programs and updating everything, still had to deal with the low disk space issue. In this case, the user had several users set up, each with their own file sets .. all former teenagers who had been happily downloading various music and video files .. into each of their various locations.
Downloaded free duplicate file finder from download.cnet.com/windows called Duplicate Cleaner ver 2.0.5. Ran it for music and video files and found and removed over 10GB of duplicated files. Yay. It is recommended for savvy users, as an inexperienced user could delete system files, but turned out to be very easy to use and to automatically flag and clear out those duplicate files. I recommend it.