I have noticed that sometimes the path my app installed to program files looks different on some Vista machines: a (x86) is added to the path eg:
C:\Program Files\MyApp
C:\Program Files (x86)\MyApp
This has not caused a problem, but I am sure curious.
First i thought it was Vista with SP 2 only, but have since discovered it happens with SP1 and no service packs. Anybody have a reason for this?