Perhaps an odd question, but here goes.
I switched to InDesign (and a new computer) several weeks ago, and have noticed a problem: anytime I'm working in InDesign, I can't access my Windows start bar. It stubbornly stays hidden unless I push the Windows key on my keyboard, which then pops it up. It's rather annoying to always have to push that key if I want to switch programs, etc. I'm not having this issue with any other programs, including other Adobe applications such as Acrobat and Photoshop.
It would help to state your version of Windows as well. Have you checked your "start" (I think it's usually called task bar?) bar options? I know the fact that it doesn't happen in other apps means it's probably not just checked to auto hide but it's woth a shot. And have you rebooted recently? I do get this occasionally in XP and a reboot fixes it. Although I think that's more to do with the fact I have 3 screens and various programs to manage them than Windows.
I'm on Windows 7.
I just checked the task bar options, and Auto Hide was checked (which I prefer, since I don't like to see the task bar all the time). I unchecked the box, and of course the task bar popped up. Then I turned Auto Hide back on . . . and now everything is working properly. Very odd. The identical settings are applied now as before, but now it's working. Go figure. I guess that's the way computers are sometimes!
Thanks for your assistance!