"ghost" timer recording on LVW-5026


for some days now I observe a weird error on my LVW-5026 with FW 201 (was on from factory side).

The recorder starts every night at 21:10 a recording which ends at 22:20 on TV channel 1. But there is no timer recording set for that.

I remember that I had a recording for that time once before (once or maybe weekly but not daily). I checked all Timer Recordings but there is no one set for that time any more (only others).

Now the question is: Why and how does that happen?

Any ideas? Please help!

Best Regards