DVRs: Nope not impressed

So we went over to my folk's place yesterday to spend some quality time with their DVR. We planned to catch up with the last four eps of S5 that we were behind on. But when we got there we found out that the DVR had not only failed to record the Vampires of Venice and Amy's Choice, it had erased all the saved eps we had already watched. Grrrr. So we watched HE/CB and sulked a lot. All I have to say is thank goodness for spoilers.