Thanks to the commenter who pointed this out. According to a lawsuit filed today, a very stupid error in the regulations has caused 3 million holders of Department of Education consolidation loans to be overcharged by capitalization of interest, to the tune of hundreds of millions. The most frustrating part is the lack of communication and accountability in the system, says the lead plaintiff:
"Pfeiffer said she notified officials about the overbilling mistake at least 15 times over the phone and in writing. "Most of the time I was told that, yes, we realize that this isn't right, but that's the way the system is," she said."