Hey guys,
I just accidentally found a way to make the iphone 3g faster after upgrading to 3.0 firmware.

I upgraded my iphone 3g from 2.2.1 to 3.0 a few months ago and it was running so slow. Playing Need for Speed was a nightmare, after a few races, I would have to restart the application or do a hard restart of the iphone. Playing Monopoly or BeJewels2 was pretty slow as well.

Just right now, I installed a theme called "illumine" thru cydia, and all of the sudden the iphone was running pretty quick again. I tried all of the applications, and none gives me problems so far. I'm so thrilled right now. I can't explained how it fixes the lagging problem. All I know is my iphone is running pretty fast again, and that's all i care. Recommend installing Winterboard first before installing "illumine", doing vise versa will not work.

Anyhow, if you have updated to 3.0, 3.0.1, 3.1, or 3.1.2 and experiencing the lagging problem, then try the "illumine" theme and tell me if it helps or not.

Man, I wished I have discovered this 2 months ago to save myself countless hours searching the web and forums trying to solve this lagging problem. Needless to say, I restored my iphone from 2.2.1 to 3.0 and back to 2.2.1 like ten times. I can't believe it was just that easy. I hope this thread helps someone with their iphone 3.0 lagging problem. I don't have os 3.1 or 3.1.2, so I don't know whether it works or not for those os.