I suspect it is thw auxillary belt. On that model year I think it is changed twice as often as the cambelt (about every 50k miles).

There was also a recall on some 2008 model for a new aux belt tensioner so might also be worth checking.

Timing belt was changed at 56k and now has done 112k. The reason for the question was that after an accident the repairs included replace "v" belt. It was quite a major smash but the repairs were brilliant. I intend changing the timing belt at 130k.