I have the same "problem" - nothing you can really do about it except deal with it.
You didnt install the drivers. Put in your OSX dvd and install the drivers to make it all work.
What does that even mean? Of course I installed the drivers from my OSX 10.6 disc, but if you have not realized the driver, I posted, is from the OSX 10.6.1 disc.
The new Boot Camp 3.1 update (released today) supposedly fixes it. http://support.apple.com/kb/DL979