No autorun problem, the drive just plain acted as if there was no disc in it. And yes it is a DVD drive, its the only drive in my shuttle and hence gets a lot of movies thrown at it. My rooms become venue of choice for movie nights at uni since I got the 2407
After a bit more experimenting, it still doesnt recognise dvds when plugged into other machines, so its yet another kaput drive. The pound shops finest lens cleaner did nothing either.
RMA all filled out, Ill pop to maplins in the morning to take advantage of their lax returns policy and get myself a stopgap