Possible monitor burn-in ?

[Krony]

Hi, been using my Samsung SyncMaster 2493HM for about 2 and a half years now and after cleaning it today i have noticed 2 lines at the top of the screen, they appear to line up with the toolbars and that on firefox and i do do a lot of web browsing, do u think this might be burnt in ?
Here is a pic:

 

[Kelt]

It's possible. You could try leaving it on overnight on a white background to see if it clears.

 

[Krony]

Yea i might try that thx, never noticed till after cleaning today and it wasn't like it was real filthy lol, maybe putting some pressure on it brought it out.