THIS is the number one reason for me to upgrade! Just upgrade and all your problems are solved folks! 
Ive had the same problems with my 3Gs, id thought about taking it to apple store to be checked out. Have many people had problems with 3Gs or just the 3G. Mine is really slow to react at times, and when i try to end tasks quite often the phone will freeze then restart, this happens more than once a day.
This issue should also be looked examined in regards to iOS4 running on the 2G Touch. Pitifully laggy.
The video is not a parody, it is real. My 3G is at least as slow as the one in the video.
My 3GS is running incredibly slow and seems to have lost some responsiveness when typing and entering URL's. It's very frustrating.OK, I just read the WSJ article. Looks like this topic only refers to the 3G, not the 3GS. In my case, my 3GS has been suffering from substantial slowdowns since I upgraded to iOS 4. Can anyone else corroborate this behavior with the 3GS?
Thanks.
Some? Lol. I know a lot of people with iOS 4 on a 3G, and they all suffer from horrendous performance. The only variance is different people's tolerance for abysmal performance. There is no variance with how poorly the phone runs with the new os.Users, however, understandably expected that Apple's steps to disable certain resource-intensive features on those devices should have left the remaining features operating relatively smoothly. That does not, however, appear to be the case for some users.
i'm so pissed that i upgraded to ios4 because this video is EXACTLY like what my iphone 3G in now doing. I cannot even answer the phone half of the time. Already ordered my Iphone 4. Was going to anyway but common! Really Apple???
QFTThe video is not a parody, it is real. My 3G is at least as slow as the one in the video.
My opinion... it's not the iPhone4 that was rushed to market but it was iOS4 that was rushed.
I really believe that most of the issues with iPhone4 (and the slowness of the 3G phone) is from iOS4. I really think Apple rushed this part. So, hopefully, many of the issues with the 3G and iPhone4 will go away with the updated iOS4.1.