Has anyone here tried the Groupwise 8 Linux client with a Cisco Anyconnect SSL VPN?

If I connect directly to my internal network the Groupwise starts no problems. When I have a VPN running, the client sits at the splash screen for at least 2-3 minutes before bringing up the password/PO dialog. The really odd thing is that during this time I don't see *any* traffic coming from the Linux client.

Any help appreciated.