Upon using "Remove Junk Files" for the first time, I get the following entries which I believe are valid. I have since added them to the Ignore List.
C:\Program Files (x86)\Corel\Corel Paint Shop Pro Photo XI\Python Libraries\tcl\tix8.1\ChkList.tcl
C:\Program Files (x86)\Creative\Sound Blaster X-Fi\WaveStudio 7\ctwave32.fts
C:\Program Files (x86)\Creative\Sound Blaster X-Fi\WaveStudio 7\ctwave32.gid
C:\Program Files (x86)\Microsoft Visual Studio 8\VC#\Snippets\1033\Visual C#\~.snippet
C:\Program Files (x86)\Mozilla Firefox\freebl3.chk
C:\Program Files (x86)\Mozilla Firefox\softokn3.chk