Wow, looks like you have a bunch of potential issues going on. I don't have a HR10-250, but the logs are stored on the 9th partition (ext2) on my HDVR2. It might be worth checking out the tverr, kernel, messages, and tvlog (big) files if you run out of ideas.
BTW, what is an HDMI card? I would think the HR10-250 is old enough where it would only have component video and not HDMI, so not sure what you mean?