Can I just point out that it is not necessary to hammer the network to determine if you have been upgraded.
If you have an Ambit stand alone cable modem go here:
http://192.168.100.1/P_operation.htm
and enter 'root' as the username and password
Alternatively, run DocsDiag:
http://homepage.ntlworld.com/robin.d.h.walker/docsdiag/