Since 4.2 iOS Update, WiFi connection on my iPad is considerably slower. General web browsing takes forever, and it's not even worth bothering with YouTube, that was slow enough before the update. MacBook Pro and iMac on the same WiFi are quick as usual (decent internet connection), just seems the iPad itself is almost unusably slow. Was wondering if there were any fixes for this? (disabling notifications etc had no effect for me) Or is it possible to downgrade back to 3.x ? Don't really want to do that, but if it means its useable again then I don't have much choice!