Completed the upgrade to 4.3 on an Ipad 1 last night without problems. After evaluating the system I found that, contrary to what I have read, Safari does not appear any faster to me. Secondly, I have found a problem in the Google maps program that is specific to 4.3 (wife's IPad still on 4.2 and doesn't have issue). At some zoom settings, map goes blank and says "no images" at various locations (no logic). When they appear, they are generally about a square mile or so and not consistant or necessarily connected. It is generally at closer views that this problem appears and some times works its way through the grey black as it often does. I realize it's difficult to outline a specific symptom; however, the map program is generally much less responsive after upgrade and I wondered if anyone else has experienced this problem or can even explain why that program would be impacted by this upgrade. By the way, operating test performed on wifi with IOS 4.2 Ipad side by side. I sure like the rotation option back!