The problem with proofing subtitles is that one spends a concentrated period of time focused at the level of everyone's crotches. This is not always particularly desirable. Particularly since it means that I now realize Ultra Papa has a crotch arrow as well. Almost more of a "v marks the spot" arrow, but whatever.
And editing always takes longer than I think it should. (She says, an hour and a half later, after starting something that should only have taken half an hour.)