Another issue to consider is the outbreak of the new variant of the Santy worm (also known as PhpInclude worm or Spyki) which is now attacking all PHP scripts (not just phpBB).
Check your logfiles for unusually long requests, often with "LWP::Simple" as the user agent. This can slow down a site considerably. I posted some countermeasures over on geeklog-devel: <http://lists.geeklog.net/pipermail/geeklog-devtalk/2004-December/000767.html> This site lists some more: <http://castlecops.com/article5642.html> bye, Dirk -- http://www.haun-online.de/ http://www.tinyweb.de/