shadow appeared on corner of my tablet!

[GBPL]

Has anyone ever have a shadow show up on your tablet? Its in the lower corner, and is only slightly annoying...but I'm hoping there is something I can do to fix it!
I had it sitting on top of my dvd player (that wasn't on) but I wondered if it had some sort of magnetisim thing happen?
Of course I tried restarting it, and then even turned it off for the night and restarted,..its still there!
Any other suggestions would be greatly appreciated!

 

[GBPL]

This should be in the Galaxy 10.1 forum, I didn't see that before I posted! I don't think this is a model problem, but if it is, there you go.
If I take a screen shot of it, it won't show up. But if I take a picture of it with my phone it does. Maybe that will help?!?

 

[GBPL]

48 hrs later and the shadow is GONE!!! OH HAPPY DAYS! lol....It must of been something to do with the magnetisim of the DVR that I set it on. So...lesson learned!