Hi Wojtek, Couple thoughts

* comment form is a huge font. You should reduce it down quite a bit
* indent the submit comment button.. its hard left but should line up with the other form stuff
* same with all the forum fonts. They are all pretty chunky.
* The layout on the forum could be improved.

I have approved it tho and will close your task so you can move onto the next one and come back later and fix this one.

This is certainly a task well done although please go methodically through each page at demo.silverstripe.com and ensure the typography looks awesome.

I.e. the font size stays the same, whitespace looks good, etc.