Cisco Vpn Client is not working now.

Hello.

I recently update my Avast Free Edition to Avast 6 in two computers, one with Windows 7 and another with Windows XP. In both computers, the vpn client from cisco has stopped to working (Reason 412: the remote peer is no longer responding). ¿Any idea?

Thanks in advance.

Which is the firewall in each computer?
Any other information that could help troubleshooting?

Sorry but the infrastructure team upgraded the vpn concentrators without warns us. The new Avast6 AV engine works sweet.