Has anyone had problems making Windows Media Center generate video DVDs?

I've got Vista Home Premium SP1 which includes Media Center. I can record to
dvr-ms format via my Pinnacle USB Freeview device. But when I try to write
the files to video DVD, either using the built-in mechanism of Media Center
or using the standalone DVD Maker app of Vista, it will get part of the way
through the generation process and then fail with "Program has stopped
responding". Occasionally I've managed to write a short program to DVD using
DVD Maker, but more often than not it fails at about 30%, while it's still
at the stage of generating the VOBs before writing them to DVD.

By the way, has anyone else had the same problem with me concering the EPG
of Media Center? It lists programmes for all channels except ITV1 and ITV2 -
for those channels, it says "no programme information available". Could it
be some sort of mismatch between the names of the channels as detected by
scanning the Freeview multiplexes and the names of the channels available in
the EPG?