There is a little problem with long links. If I post a link like this:

http://www.tourtopakistan.com/pakistan-historical-sites/tour-to-mohenj odaro.html

the link gets broken (...mohenj odaro.html instead of ...mohenjodaro.html). It works as a link, but if I copy-paste this link into browser, it will not work.

The most important thing is that an URL behind the link is kept untouched :-) So if you copy/paste the link and that way visiting it, it sounds like you are an alien! Humans are just clicking on a link.

Anyway, this is not a bug and works like planned. Large phrases, incl. long URLs, are splitten on miniBB, so they don't ruin your layout. By default, splitting of large phrases begins from the defined in setup_options.php $post_word_maxlength'th symbol.