I use two computers one running XP 32-bit and the other Windows 7 64-bit. Updating both the computers to version 6 I found that I had a problem with using the Sandboxie “run web browser sandboxed”. Sometime the browser would load on the XP computer but I could never get the Windows 7 64-bit computer to load Internet Exporer or Firefox, in the end I restored both computers back using a backup image. Using Avast (free) version 5 everything works perfectly with sandboxie.