MythTV keeps crashing on me, even when I watch non-HD shows. I am done with downloading the latest code, rebuilding and restarting the computer. I have therefore decided to switch to Microsoft Media Center for Entertainment 2005 (MCE 2005), as I believe they have no software bugs whatsoever :)
Since the firewire option does n't work with MCE anymore, I am purchasing a dual-TV tuner from Hauppauge (WinTV-PVR-500MCE PCI-Tuner) to record programming. This TV tuner card allows me to record one show and watch another simultaneously or record two shows at the same time.
Cost: $133 (Buy.com)