My wifi is incredibly slow after I upgraded two of the three iPads in my home to iOS 4.2. The other iPad that has not been upgraded works fine. In a side by side test loading the same web page, the iOS 4.2 iPad takes 5x as long. Any ideas on why this would happen?
I have to weigh in on this, too. My wi-fi access to the Internet is also much slower than before I installed iOS v4 on my iPad. It's painfully slow. In an attempt to fix it I restarted my iPad, and I cleaned all of my Safari cache. All to no avail.
The same for me. After iOS 4.2 installation the wifi connection is very slow. Unusable. Other mac and pc work fine on the same wifi lan. There are other posts on this subject, I believe this is a true bug. Now I try to reboot my router.
I also have these problems. iOS4 slowed the internet down on my ipod touch since it's original release and now not only is it slower now on my iPad but sometimes it just doesn't load anything despite the wifi signal showing. Tried resetting router/network settings etc. Very frustrating.