I've finally struggled through the mysql (no prior experience) portion of setting up a MythTV system and am now having issues with a new Hauppauge PVR-250. I have the program guide working, can run mythtvsetup, access all the menus, etc. Unfortunately, if I choose "Watch TV" all I get is channel 4. Any attempt to change channels fails, which causes me to suspect that my tuner is incorrectly defined... or the module is not loading correctly... Anyone?