There's something slightly wrong with the header on the flag summary page (on your profile page, click the "x helpful flags" link); the dotted line coincides with some of the descenders (e.g. the g of the word Flags):
It looks much better with a little more spacing, e.g. on Mathematics Stack Exchange and Stack Overflow:
I've checked the CSS rules and when disabling the specific padding rule for the
subheader div, it looks much better:
Another page which suffers the same fate is the 404 page in the /users/ section.