I had a 2006 Marmolada, aluminum triangle and carbon stays. Last year, one of the welds near the bottom bracket cracked. My LBS emailed a picture to Orbea, and they replaced the frame under warranty with a free full carbon Orca frame. (Actually, the Orca Bronze bike is only a little more expensive than my Marmolada was.)
Thanks, Orbea!
2006
2013 frame