Two of the recent red flags involved R18's--Dagys tweeted that the #3 Audi and one of the Gulf Lolas were stalled on track and the #2 Audi left behind a rather large chunk of debris from an off somewhere:
https://twitter.com/#!/johndagys/med...c.com%2F8vhnk0
Thing is that they've by far run more laps in both sessions than anyone else has--the ironic bit of having one car stalled (likely after a spin) and one either rear-ending another car or trying to re-arrange a tire wall.
And like LM, it seems that the "young guns" have had a largely trouble free run relative to their teammates.