Most the the Creative Suite misbehaves with respect to the Windows 7 taskbar. One behavior that's particularly unproductive is seeing a bunch of gray icons for open application windows, and having the associated full size peek image grayed out too. I frequently work with many open image windows that I prefer to keep undocked. If they're minimized, more often than not there's a gray taskbar preview.
Screen capture example attached.
Once I click on the thumbnail and activate a window, the thumbnail taskbar image updates. But when I switch between applications, the updated thumbnails will usually go blank next time I peek at the PS6 taskbar.
I'm not seeing misbehavior, in that I appear to be getting all the thumbnails, but interestingly I'm not seeing the titles in the Taskbar Live Previews like you are. Maybe it's because I have the Taskbar set to show buttons with the names in them... I can also see the document title if I hover over the icon.
Regarding why you would be failing to see the document images... Seems quite likely that would be a display driver issue. What video card and driver version do you have?
Sorry if we discussed these details before; I recognize your username though I don't recall what we discussed in other threads.
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