sometimes browser just recieves half the page

Im programming a page where I have a java-tree-menu that gets generated from a db. The code works perfectly but sometimes when a browser reads the page I just get half of the page. I have noticed this behaivour on many different browsers such as mozilla, netscape, galeon, explorer and even wget sometimes. The page is here so you can try it yourself (Its a frameset page actually, the page with the problem is to the left): http://www.rskhq.2y.net/~nacka/ The actual php page that has the problem is: http://www.rskhq.2y.net/~nacka/vr_navbar.php I suspect it is some problem with the configuration of apache or php but I dont know where to start looking. Versions: PHP 4.1.1 (See http://www.rskhq.2y.net/~nacka/phpinfo.php) Apache/1.3.22 (Unix) Please CC me since Im not a member of this maillinglist. -- * John Ericson john@john.pp.se * ICQ: 7325429 JID: high@jabber.org * web: http://john.pp.se