Well it doesn't work or you have the Firewall enabled now on your workstations?

Version 10 did not have a firewall. Version 11 has a firewall and I bet it's on by default which means many remote scripts or tools will fail if you don't either disable it or at least open the appropriate ports.

I got an e-mail from Symantec to upgrade but have not done it yet and not sure if or when I will. AV 10 has more than enough capabilities for us at this time and I don't see the need for 11 and all it's Bells and Whistles (i.e. less available resources for the workstation).
A pig it is (but then again so is McAfee and others now days) I suppose they think every system on the network has 2GB of RAM and is running a Dual CPU (We still runs some with PIII and 256MB RAM on MFG line as it does what it needs to do)

If you can confirm that it's not due to firewall and that they have in fact changed their main REGISTRY keys then please let me know and when I have time I'll look at updating the code.