Recently updated my iPhone 3G to iOS 4. Slow. So slow. I feel like I'm underwater. Simple SMS takes forever. Even playing music has a noticeable delay. Bleugh.
All this for what? Folders, threaded emails, editable playlists, blah blah. All very nice, but jeez, if you're going to slow my phone down like this, Apple, give me that multi-tasking thing that's on the 3GS and 4G.
I've heard all's well with iPhone 3GS users, but regardless, Apple products are just supposed to work. You broke my phone, Apple people, WTF.