hum..i guess i didn't explain myself very well :S
What i showed,has only effect over sc,before that happened,i was using the computer without any problems,and even when sc is maximized,i can use opera,for instance and have no problem using it..
Now that you mention it,earlier today,the last time i used sc,i did the redbox in opera,possibly your're right.
I don't think it has anything to do with rebooting,since rebooted last night,after installing sc.
Maybe we could tray to see if somewone else has the same problem,and check if it's my shell's problem or not,there's no need to chage the program if i'm the only one experiencing problems...
(I will now try to test a bit more to see if it really if from the red box selection or not)