Change number of posts listed in category grid

Hi Anders – Thanks for a clean, simple theme!

Currently, the category grid displays 10 posts per page. Since the layout of the page is 3 columns, that always leaves a bottom row with only a single post… even when there is pagination to continue to the another page for the remaining posts.

It would be great if the category grid would display a number divisible by 3… for example: 9 posts (3 rows of 3 columns) or 12 posts (4 rows of 3 columns).

Is there a way override the current default of 10 posts?

The page I need help with: [log in to see the link]