Downgrade iPhone 3G from iOS4 to 3.1.3
Yes, I upgraded and yes I regretted it almost immediately. Ponderous, sluggish performance ruined any joy derived from new features.
Luckily Lifehacker came to my rescue: http://lifehacker.com/5572003/how-to-downgrade-your-iphone-3g%5Bs%5D-from-ios...