Belkin Routers :: F5D9230-4 - VPN Connection Drops Repeatedly

I have wireless router F5D9230-4. I use this every day to connect to my employer's corporate network from my home, using a VPN connection via Cisco AnyConnect Mobility Client.

Just about every day my VPN connection is interrupted and, although it "thinks" it is connected, it loses connectivity to my company's corporate resources. This occurs even though I'm connected to my router using a Cat5 cable. While this VPN connection is lost, my Internet connection keeps working.

When I use the same computer, even wireless, connected through other networks outside of my home, the VPN connection is never lost (or at least never that I remember).

When I wire my computer directly to my cable modem, this problem does not occur and my VPN connection stays connected throughout the day.

Note that I reset my wireless router to all default settings other than the password to access its management utility, to avoid any "weird settings" coming into play.

I wonder if this has to do with "VPN Passthrough" or the windows 7 firewall conflicting with my router's firewall?

I've been working with the IT department at my job for weeks on this and a resolution doesn't seem to be coming from that direction. I'm on calls every day that use this VPN connection and it's to the point where these VPN connection losses are embarrassing to me.