TwentyTen theme will break galleries with more then 3 columns (also 2 columns galleries look strange). This is a little fix.
TwentyTen, the default WordPress theme, removes the default dynamic styles from WordPress galleries, and adds some static CSS, so galleries with anything but 3 columns look broken. , it is TwentyTen specific.
This plugin adds some custom classes to galleries (eg. 4 columns: .width-25), and some CSS that fixes the width problem.
No configuration needed. Just upload, and install. The galleries will look as they should.
Screenshots
A gallery with 8 items, and 4 columns (150px thumbnails) ? twentyTen default
A gallery with 8 items, and 4 columns (150px thumbnails) ? twentyTen fixed
A gallery with 8 items, and 5 columns (100px thumbnails) ? twentyTen default
A gallery with 8 items, and 5 columns (100px thumbnails) ? twentyTen fixed