Vista - Vista Experience Rating

Running Vista Ultimate (32 bit)...

Determing my "Windows Experience Rating" I run "update my score" from the
"Rate and improve your computer's performance" screen... WinSat.exe
executes, but no progress dialog appears as it did when Vista was first
installed... I know WinSat's running because I can watch it in process
explorer, and it does seem to updating because when it finishes I can
"refresh" the screen where I started it and the last rating date and time is
updated...

I would guess that the link or registry key that executes WinSat has some
switch set that turns off the progress dialog... The following key has
values set as follows:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU

a - c:\windows/system32\winsat.exe\1
b - c:\windows/system32\winsat.exe /formal\1
c - c:\windows/system32\winsat.exe /formal\1

Is the "\1" the culprit ?