The biggest problem on the Apple forums remains the batter issues . Batteries that are draining from 90% to 7% over night when not in use. Batteries that appear to hold steady for a while then drop precipitously all of a sudden. The problem is happening even if those who are affected have turned off anything that might be causing the problem such as Siri and location services. Even if this worked it isn’t a real solution. It is sort of like giving someone a sports car and telling them they can only drive in second gear. One solution that has worked for some people is to recalibrate the battery by holding the Home and Lock button at the same time for 10 seconds until the Apple logo appears and then let the iPhone or iPad restart.
It is clear that there are still problems that Apple needs to deal with even after the 5.0.1 update. The biggest problem is there maybe multiple causes for the issues everything from defective hardware to Apple software issues to a third-party issues. Trying to determine where the problem lies can be a matter of trial and error. Plus one fix may work for some people and not for others. If you are having any of these problems make sure you get them reported with as much details as possible.