Yeah it does, from what I'm told the ECU will log faults a few times before chucking a CEL. That's why so many of the Derby lot have these intermittent faults, it might only have happened once (not enough to light the CEL) but the ECU will log it anyway until a VAG dealer/VAGCOM reads and clears the fault log.
Fantastic! Don't supose you fancy popping round for a cuppa and a *cough* VAGCOM session next time you're in my area do you?
l never know my luck...it might actually help shed some light on the whole situation!