I've changed the title to "WinTV7 and driver bugs", as I think my issues (as well as some other posters here are experiencing) are a more rudimentary problem with the drivers and software which is not being addressed.
Win XP SP3
WinTV7 2.2B (I looked at downloading 2.2D, but looking at the app notes, seems to not address any issues I'm having so it is not worth it)
WinTV PVR-150 Analog Tuner connected to a STB via S-Video
HVR-1250 Digital/Analog Tuner connected to OTA antennas
Driver for the HVR-1250 randomly uninstalls itself when bring computer out of standby or starting from a power-down state, forcing a re-install of the drivers. A note here is that I have a second system that uses a HVR-1250 and WinTV 1.1 that had THE SAME PROBLEM. Mr. X was generous enough to forward me some drivers to fix the issue...to which it did, but these drivers seemed to never end up making into the actual WinTV install pack, since I'm still experiencing this issue with this later version of WinTV...on a completely different system...why I ask?
WinTV7 has issues with S-Video from multiple tuners. I install WinTV7 and it installs all the drivers for the two tuner cards. It first asks me how I want to use the HVR-1250, to which I set up a scan for ATSC OTA signals, then NTSC OTA analog signals. Then WINTV asks how I intend to use the PVR-150, to which I setup the S-Video connection for input from a STB.
Problem is now when I tune in the S-Video input after, it is actually inputting from the HVR-1250 NTSC Analog input, not the S-Video of the PVR-150. I've also had it that it tuned the S-Video input of the HVR-1250 when I clearly did not set up that input. It just seems that the drivers for the PVR-150 are somehow "broken" in WinTV7. Funny thing is though, I can use MediaPortal, and it determines the inputs just fine.
The Blaster is broken in WinTV7. Well its broken if trying to use a PVR-150 card. WinTV6...no issues. My STB is a ExpressVu 3100, and I could control it no problems. But I can't use WinTV6 with the HVR-1250. Now the HVR-1250 doesn't have blaster capabilities, and I still need the PVR-150 for that duty (makes sense since I have the STB connected to its S-Video input), but the Blaster Setup software now doesn't have the common STB setup anymore...and one has to learn the remote. This doesn't work! I think the one MAJOR issue is that WinTV7 doesn't recognize that a blaster is even connected to the PVR-150...it doesn't seem to be backwards compatible. Not to mention as to why you would take out the common STB setups? Why mess with something that worked is beyond comprehension.
I only hope that you take these issues seriously and I hope to see them addressed in a future WinTV7 update.