Spybot 1.6.2 used to have both Checks and Fixes logfiles,but Spybot 2.0 and 2.1 only have Checks logfiles for the scan results (or Scan Results logfiles if you opt to save a logfile after the scan),and Fixes logfiles do not appear to be available.It was normal in Spybot 1.6.2 for the Checks logfiles to show (Nothing Done) because it was showing the results of a scan-i.e a check.It was only the Fixes logfiles that showed (Fixed) or (Fixing Failed) in them.
I guess doing so saves on the amount of logfiles,but personally,I did prefer to have the Fixes logfiles and wish they were available with Spybot 2.1.

If you haven`t already,please try running the Spybot scan as administrator:
http://www.safer-networking.org/faq/...indows-vista7/