I don't want to turn off iMessage, Location services or anything like that. Otherwise what is the point in iOS 5 if you can't use any of it's features. Nobody sends me iMessages apart from a few people, and it certainly shouldn't be 20MB a day!
I am still waiting to see if iCloud being off causes any improvement, then I will probably move on to turning off Push Exchange email & calendars
I am still waiting to see if iCloud being off causes any improvement, then I will probably move on to turning off Push Exchange email & calendars