No longer ping after Cisco VPN Install

Is it changing your FW rules?
with or without tunnels created? with tunnels, it might be preventing split tunneling.

FW is disabled, I don't run the VPN client at all.  I'm on our local domain and can't ping...not trying to go through the VPN at all.

Whether the VPN client is active or not, there is a setting on the client - Stateful Firewall (Always On)
Make sure it is unchecked..

It is unchecked.  Still no help.  Increasing points again.

can both boxes ping themselfs on the real IP, and the default gateway for the box in questions?
after and before the install.
what does ipconfig /all give you? and route print, and arp -a

You have probably checked this but is your Windows firewall turned off? Go into the network card's settings or Start menu/Accessories/System Tools/Security center

Yes, the firewall is turned off.  From the machine in question I can ping anything on the network.  However, other machines cannot ping the problem machine.  Ipconfig /all gives us all the information we expect: our ip address from the domain controller and the gateway information.  ARP -a doesn't give me anything out of the ordinary, the mac address and the type as dynamic.  No problems with route print either.

I feel like I need to explain again...there is no VPN connection established.  I am on our domain, installing new software.  Everything works fine until I installed Cisco's VPN client ver 4.6.02.

Go into task manager and kill cvpnd.exe process
Now can you ping it?
If so, OK, if not - does everything else work on this system other than the fact that you can't ping it?

Look in Program files\Cisco Systems\VPN Client\
Open vpnclient.ini
What does this line show:
  StatefulFirewall= (0 or 1)

The last thing I would suggest if the problem has persisted thorugh the above solutions is to go to system -> hardware and remove your network card. THen reboot your computer and it would prompt you to install drivers for the 'just found network card'. Install these drivers and check to see if the problem goes away

Do you have windump available? or ethereal? both are free for download. I would dump on the pc , and try to ping from another pc and see if any of the packets are making it to that box. or if the box is responding.

I didn't realize that Cisco released a newer version.  Thanks to all that helped...it was a problem with the VPN client.