From what I can tell after some research, it's not just you having this problem "Daved12".

I had the same problem a while back with three Dell 22" LCD's in a row, it happens.
(I know you didn't get yours from Dell, just an example.)
Please do not contact Dell about this!

Time to do some bargain shopping if you find it annoying enough of a problem. It would drive me nuts since I do part time design work myself!