Wow, ever since I updated to iOS 6 it takes my iPad3 forever to sync via wired connection with computer and to update apps via WiFi. I also get a lot of WiFi weak connection messages. Looks like Apple really messed up with the iOS 6 update.
Syncing with computer takes an hour or more for a 16gb iPad3 with most of the memory (13.39gb) still available!
To update an app via WiFi used to take seconds. Now it takes 10-20 minutes!