I have two Macbook Pros, a Macpro, an iMac at work, etc. I plugged my 4S into my Macbook Pro for the first time last night and I received a message something about it was now connected to 4 of the 5 authorized Macs...it was the first time it was ever connected to a Mac (AFAIK) 1. I never connected it to a Mac before, why is it telling me this? 2. Is there a limit to how many Macs you can synch it with? 3. What if I want to stop using one Mac and start using another, how do I do this? Thanks!