hi, i have download a few games and other applications. since a few days ago, the game Sonic - the hedgehog started to lag. i thought it was just a matter of restarting game or iphone will solve the problem. but it didnt. so i change to other game. i turn to ReMove the game, eh, even starting the game also a bit lag. so i close and open every other game, all same, lag. but mp3, music and other applications are fine. as long as it's game, it will lag. just now i restore the iphone and reinstall it, also...lag... now my phone only with additional 5 applications including 2 games, lag also... can anyone tell me what's wrong already????? sigh....

your help is very much appreciated. help~~~~

i am using an iphone 3g. if like that how do i go back to the previous version of all those games?