I presume the modem is the latest model as I had the service installed in early December. And I believe the firmware is up to date (currently says "FAST2864_v6740S").
The modem interface is fully accessible and even says "connected" under "Internet status" even though the internet connection is clearly down (sync-no-surf?). In fact, one time the modem rebooted all on its own.
This situation only occurs when my work laptop is connected to my work's network via VPN. Any other web traffic, streaming video, etc. doesn't cause this to happen. I never had this issue with my old 6 meg service.--
"It's all coming down!!" - Mike Holmes