My 3g is ALWAYS lagging even if I DO restart. It's becoming a nuisance. When I close or open apps, the little transition doesn't even play half the time anymore. I am jailbroken, however this was happening before my jailbreak. When I'm charging my phone and using it, the lag gets worse!
Is there a problem with the software, or is it really only intended/optimized for 3GS users?