My partner was on US Airways flight 659 from PHL-SFO, non-stop yesterday. Upon boarding they were informed the flight would be diverted to Denver because of "lack of fuel." That raises a few questions...

1. Is this a common occurrence?
2. Will her dividend miles be based upon the non-stop SFO-PHL, or will it include the stop in Denver?
3. Generally, I cut the airlines a lot of slack but is this worth giving the 800 line a call to voice my displeasure?

Thanks for any advice!