TV's Frink said:

And any episode spent watching Kate is not a bad thing :-)

You say that now. Give it a couple seasons.

Having said that, why have me watch all 42 minutes and not tell me what she actually did to get arrested?

Because it's Lost - you're gonna have to get used to shit like that.

(This post makes me sound much more disillusioned with Lost than I actually am. I don't hate the finale, or the last season. I'm just trying to be realistic when it comes to what newcomers to the show should expect, I guess.)