This may be paranoia but our 1000S has an automatic timed on and off set for 0500 every morning for 15 minutes on BBC1 to ensure that the EPG is updated. This has been set for a long time from when earlier firmware was a bit iffy and it used to forget to do things.
Only had one event recently when it forgot a whole days recordings but this was due to a crash/lockup which is being discussed on an other thread.