Gap Much? And no warning?

[Unknown Entity]

This is a post I just made (duh lol), and there appears to be a huge gap at the bottom of my sig. I've gone in to the edit thing, and that doesn't make a difference to the gap if I delete space (well, there is no space to delete).

Also... I should have a warning, but it doesn't show a warning... :S

... Not that I'm proud of flaunting warnings off, but shouldn't there be one there?

EDIT: I just spotted the stuff on the side which could be making the sig appear long. So now I just need to know about the warnings not showing...