Did anyone else have problems recording TV3's S.A.S. programme?

My new Sony DVD recorder displays "... unrecordable.." from time to time while recording this programme, & inserts blank bits into the recording.

Several possible causes come to mind: 
Govt suppression of recording sensitive stuff? (surely not..)
Sony recorder can't handle something in the broadcast? eg fuzzed-out faces - except that it has handled this OK in other broadcasts..
Broadcast of "copy protection" signals? (can this be done??)
Faulty recorder? 

Anyone got any ideas??

NB:  this is in UHF analogue broadcast - not digital..