Yeah i just got hit up for $150 fine for going over my S2 limit even though I didn't. Last weekend I took my 3 yrs old on a day trip to D.C. First flight in; last flight out(SB flew flew first flight into DCA). Last flight was of course a Comair flight and I used our S2's(my last for the year) to get home. Gate agent cleared us and then the flight canceled for mx and crew timing out. Captain said they were repositioning the a/c to CVG in the AM. I called the mx control to ask the duty manager to get us on the repo flight; which they said no problem. The next morning, the TSA gave me a hard time going through security without a pass. I was going to miss the repo since they couldn't hold the flight, so I called the SOCC and told him we wouldn't make it through secuirty in time. I had to go list for the first flight to CVG. I used an S2 again since they rebooked a bunch of pax and us nonrevs for the first flight and I needed to be at the SOCC by noon. So we got on and got..barely. I got the nice little notice from DL this week and called the pass bureau. She noticed that DL charged me an S2 day from the canceled flight and will call DL to "try" and reverse the extra S2.