Windows Key Sticks After Switching From Extended Desktop To Computer Only

After using an extended desktop on a Lenovo notebook we hit WinKey P and clicked on Computer Only mode. The extended desktop went away.)

Then when you go to type you get the various commands as if you were still holding down the Windows Key.

An apparent work around is to press the Windows Key (Start Menu comes up), then press it again. The keyboard again works as it should.

Anyone have a permanent fix for this?

OS has all patches *except* Win7 SP1 which we'll try and install later today. But from what I've read about SP1, I'm not sure it will make much difference since we have all the other patches.

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