[lch]

The [code] tag is broken. It should just translate the [code] environment to a <pre> environment and it does that if you create a new post with [code] tags in it. But if you edit your post and want to submit it again, the forum software then prefixes every line of HTML output for the forum post with a <br/> tag, too, for unknown reasons. Together with the newlines encountered inbetween the <pre> tags this results in double newlines in the browser and makes the text rather unreadable because it's stretched out of proportions. Please remove the buggy bogus code which adds these useless <br/> tags all over the place.