As Steve suggested, it turned out I had to "reboot" the TV which sets everything back to factory defaults. Fox HD was back after doing the channel scan. Only downside is I had to redo all the configuration changes I made and it will take several days before the tv guide is fully loaded again.
I'm quite pleased with the set, although I like the PQ of the Sony 34XBR960 CRT set better, but I wanted a larger screen and I didn't want to wrestle with the 200lb Sony for installation.
I spent a lot of hours tweaking the custom settings before I got a picture that I liked for both HD and SD content (SD looked absolutely horrible with the factory settings). Like all LCD's black level could be a bit better and it takes very careful adjustment to get a decent black but still have detail in it. That said, 34.1 looks absolutely stunning on this set - there are times when it feels like I'm in Europe with Rudy Maxa.
Your friend "stole" the set for 200 plus the cost of a 34HF83 - what a deal !!! I think he'll really like the set.