1. The device constantly disconnects in the middle of channel changes and recordings. When the disconnect happens, you can hear the sound Windows makes when you unplug and plug a USB device in. If the disconnect happens during a recording, the file cannot be deleted until you stop the WMC service.
2. It's not seeing all my channels. It's interesting that the device is generally able to tune some of the channels using the included SiliconDust utils. It's almost as if the entry that maps a channel to a specific frequency is missing (by looking at the device log file). Not knowing how this all works internally this is purely speculation. I can't test the SD utility on encrypted channels since the decryption is tied between the paired device and WMC.
3. As expected, you can't share the file between media centers on the same network. Thank you paranoid studios (or whoever is worried about such things). It would seem natural that machines in a single Homegroup would be able to watch each other's content.
Re: 1 - support tells me there's a fix coming for the disconnect issue.
We haven't looked at #2 yet. I want to get #1 resolved first or this thing's useless.
Re: 3 - I thought I might be able to use the DVBLink software to share content. It's one of their selling points. It turns out that TVSource assumes you're using satellite or a European cable operator. When you configure a source to share, you choose from cable, terrestrial or satellite. Cable and terrestrial force you to pick from a European provider to configure the device. Satellite assumes you have a real LNB that can be configured. Neither is true here. Their resident expert said they don't work with Cablecards.
If anyone has a thought on #3, I'm open to it. Oh, and I'm not going to use my XBox. I don't think switching between a cable box for live TV and an XBox for recorded TV will pass the wife test.