Sounds like any 3g or 3gs owners that have updated, have pretty much rendered their iphone useless at this point. I am most likely going to stay with my jailbroken 3.1.2 as I already have all the functions pretty much that this bloated OS has just now given their users supposedly but minus the bad battery management and slow operations.

New isn’t always better. Come on Apple. Step it up a little on the testing. This is a really lame way to force your customers to have to upgrade to Iphone 4, the only phone that this OS should really be used on

My 3gs is working perfectly and dont wanna lose that for now.

Here is my take on criticizing ios4:
1. I don’t know HOW 3G users actually manage to run ios4 on their devices. It’s laggy even on 3GS! I definitely need to upgrade to iphone4 for more speed.
2. I like the “shortcut” idea and with developers updating their apps, like Pandora, the backgrounding is going to be officially implemented.
3. I wish the folders didn’t have that fixed background picture or else they could make it change as a user changes the wallpaper.
4. I don’t like double clicking the home button! I like that gesture for favorites. Is there another way of activating the dock?
5. iPhone 3GS runs smooth while there are no processes. The moment apps like phone, msgs, safari and settings appear in the dock, I can forget about running skype or pandora – things will start getting a little slow and a little frustrating.

I ran a test yesterday. My wife and I went to a supermarket a little ways from home, so we were listening to pandora, and I had MapQuest running as a GPS. To my great surprise MQ and Pandora were working in sync where the music volume would be reduced when MQ had something to say. So backgrounding/multitasking in ios4 looks very promising.

Bottom line, thought, Apple should make it available to public to be able to downgrade to the latest 3.x firmware for all the 3G/3GS users due to lack of processing speed.

I was disappointed in not being able to create custom name picture albums, and I wish we were able to rearrange photos how we want. Having family pix, contact photos and wallpapers in one folder is a bit messy for me. Other than that, it looks nice and, as I said before, looks promising.

“Due to some confusing reports about a mobile ad analytics study, stories are proliferating on the interwebs this morning that 50% of iPhones are running iOS 4!!!1!! Later corrections modified that report to say that 50% of all web traffic is from iPhones running iOS 4!!!1! The actual report, though, shows that 50% of iPhones with installed apps using one particular ad company’s banners are using iOS 4 – a very different
statistic. However, it does show that the new OS has penetrated pretty quickly just a month after its release. By contrast, Google reports that Froyo is
running on just 3.3% of Android phones.”

That aside, I have iOS 4 on my phone…learned the hard way when I tried to jailbreak it. I am thinking of upgrading to iOS 4.0.1 so as to get SHSH saved.