I just installed Windows 7 a week ago and today a very weird thing happens - Aero Peek doesn't work all the time. I have no idea what the issue might be.
Before I forget - one thing I noticed is that when it does NOT work the taskbar icons seem like stuck in selected mode. What I mean is when you go over them they change their color - eg. like they are selected. But when you go away they become transparent once again - well when Aero Peek stops working mine don't go to transparent.
I've attached an image so you can see:
The bar on the left is how all bars should look like when they are not hoped over, yet as you can see the right bar has its "selected" color stuck.
After I make a few "show desktop" switches, and then switch between windows - it somehow gets fixed. Totally random.
I've tried closing programs, did the troubleshooter (said it's all OK), went into settings... basically everything I managed to find and thought of - I tried and nothing helped.
All other functions of Aero work.