I have recently set up a new install of Windows 7 and I have just noticed that when alt-tabbing I am not getting Aero-Peek previews as I am accustomed.
I have checked to make sure that aero-peek is enabled in both the taskbar properties (and taskbar icons do show previews!) as well as in system performance settings. Both are enabled.
I even looked at a couple of registry edit solutions, but the key I am supposed to edit is not present (adding it did nothing). Even Alt-Tab Tuner hasn't solved the problem.
Any other ideas?