Many (maybe even all) series on Crunchyroll (perhaps Hulu as well) for example have no subtitles for the opening and ending.
Why is this?
This was stated by the Support Manager??(or is that just a forum title) of Crunchyroll:
He also backs that up at: http://www.crunchyroll.com/forumtopic-758633/are-cr-subs-lacking-a-bit
So he does seem to be a staff from Crunchyroll.