I have a VPN set up with the Sonicwall VPN client running through a Linksys BEFSX41 and Speedstream 5200 DSL modem, and I can download via FTP over VPN but not upload. If I try to upload more than about 1K, it will simply get stuck. Everything works over dial-up, but it's too slow. The DSL modem is set to bridge mode. Can anyone tell me what's wrong?