Thanks for the reply.
What operating system are you running on your computer? Mac OS 10.7.3 LIon or Windows?
Try turning off your Firewall and see if you can login to http://me.com/move. Also, make sure your operating system is up to date.
See icloud, mibleme, me.com transition topic. Others were having issues and turning off the firewall solved it for them.
Hope this helps.