Since renewing NOBU at the weekend, I've had no success at all backing up.
I've installed/re-installed/rebooted etc. numerous times, but no success. It just hangs on Awaiting Agent Backup. I'm using a Mac (Lion 10.7.3). I am using Norton Internet Security - I've double checked that NOBU is allowed through the firewall.
The other problem (and it may be related) is that, despite clearing the account down completely - it's still showing that I'm using 24GB of 55GB. The 55GB comprises of the initial 5GB + 50GB add-on. I'm not going to renew the 50GB add-on, so you can reset this back to the 5GB.
Thanks.