Windows 7 new apps windows with no focus
Solution 1:
I have this issue with a Microsoft keyboard on a Windows XP machine as well. It seems to be a problem with either the Microsoft IntelliType software or keyboard driver, and it seems to be just the calculator button.
One "solution" from the Windows 7 Taskforce website is to tap the key twice to pull the calculator to the front.
This same behavior also appears when the calculator key is set to launch another program - see Issue 302 for SpeedCrunch.
Solution 2:
Sounds like a driver bug, actually. Is the your driver's release date AFTER the release of Windows 7? Not everybody -- including microsoft -- has update their drivers yet.
Alternatively, is there a setting in the driver somewhere that allows you to choose whether a window is in front or not?