Believe thats called an Artifact/Ghosting. Simply pull down your Notification Bar to get rid of it. Or it it bothers you alot, Flash Bobbar's MOD and it'll get rid of the problem.
ok i liked the old one a lot better than the straight black one, how do i get it back? Also after flashing that my phone took forever to boot(understandable) but now my cell standby is always at 34% wtf lol. EDIT iv noticed it changed a lot more than the status bar lol, did it change the framework? EDIT 2: i flashed the SD v2.0 again without wiping and now am back in business and my cell standby is back to normal too idk what had happened b4.