many setup exe's in WindowsNT Compatibility Assistant Persisted

On a 2 months old windows 7 installation, I discovered that many setup.exe's are in a register compatibility mode: HKEY_USERS S-1-5-(very long number) Software Microsoft WindowsNT CurrentVersion AppCompatflags Compatibility Assistant Persisted There are other places in the registry for Compatibility Assistant, but these do not have any entries. I have 64 bit windows and some of the programs...