Found a bug which id like to report to apple.
It occurs when i have an appplication running and highlighted then run apple software update form the apple menu. If i got into expose as soon as i click run software update when the update finishes looking for new software (it finds none as im up-to-date) you can see that it says new updates has been found, returning from expose it gives a new message than no updates are available to download.
Hope i explained this right so you can see if this happens for you too.
EDIT - included screenies
In expose http://img505.imageshack.us/my.php?image=picture1fu9.png
Returned from expose http://img214.imageshack.us/my.php?image=picture2kf2.png
It occurs when i have an appplication running and highlighted then run apple software update form the apple menu. If i got into expose as soon as i click run software update when the update finishes looking for new software (it finds none as im up-to-date) you can see that it says new updates has been found, returning from expose it gives a new message than no updates are available to download.
Hope i explained this right so you can see if this happens for you too.
EDIT - included screenies
In expose http://img505.imageshack.us/my.php?image=picture1fu9.png
Returned from expose http://img214.imageshack.us/my.php?image=picture2kf2.png