VPN Client is assigning the same IP Address to both the interface andthe default gateway.

I am working with an ASA running 8.x and a Cisco VPN client running
4.6.03.0021. The client connects fine (passes phase 1 and phase2 and
traffic flows downstream of the client which I have captured. It
appears as though the traffic it not returned to the client as all
sessions timeout.

I have other clients using this same profile without issue. It appears
that the clients having the problem all have the following in common:

Physical NIC
IP Address. . . . . . . . . . . . . : 192.168.2.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :

Cisco Systems VPN Adapter
IP Address. . . . . . . . . . . . : 172.16.1.25
Subnet Mask . . . . . . . . . . . : 255.255.255.240
Default Gateway . . . . . . . . . : 172.16.1.25

You will notice that the Cisco VPN Adapter is given an IP Address and
Mask from the ASA via a configured address pool.

I have other Cisco VPN client running version 3.6.x and 5.x that do
not have this issue. I ruled out the common issues NAT-T, MTU, etc.

I was hoping some one could confirm or deny whether this IP addressing
issue may be the culprit.