Hi Wools,
What version of Windows 7 are you using 32 or 64bit? Did you follow the default install or did you install to somewhere like C:\Airnav. If you followed the default install the versions will be in programfiles somewhere.
If you had 2.1 and are now on 4.03 you will have 2 instances on your computer.
80,336 is the original Navdata and shows that the installed updated Navdata is not being read but the original is.
Alan