My 1000s is only a couple of days old, so I am still getting used to it.
I have one recording (Jools' Hootenanny on BBC HD) that I am watching in several parts. Each time I go back into it and choose 'Resume', it plays from the start of the recording.
I have checked a few other random recordings and they all seem to resume fine. I assume the Resume function is dependent on the PVR 'marking' the recording at the 'Last Watched' point and that it has failed to do this on this one recording for some reason.
Is this a known problem?