Since day one my Galaxy s2 had the notorious wakeup lag- it would take 1.5 secs or so for the screen to turn on after pressing the home or power button. I don't know how many people have it, but it sounds pretty widespread, and both stock and rooted phones with different roms suffer from this little problem. Yesterday I was forced to do a hard reset because my phone went crazy after a certain game ("destroy Gunners" free version) froze... the fact that my Go launcher settings weren't backed up and I had to tweak it all over again, and the fact that I lost all my Gameloft games, kinda sucked, but the compensation is that the lag dissapeared. It worked for me, it might work for you, although I'd think someone would have already figured it out... Cheers!