I have just installed a new copy of the latest PHPWiki here: http://hammer.amdmb.com/
If you go there, you will see it is unbearably so, and was the same slow speed before adding my layout to it.  I am using a mysql database backend for it.
Whats even more odd is that I am running an older version of PHPwiki here: http://www.amdmb.com/wiki/
Its on the same machine/server jsut a different directory and all that, but it runs fast a can be, also using the same MySQL. 
There is no way I can launch the PHPWiki in that kind of speed.... any ideas what it could be??  Thanks!!
Ryan Shrout
Owner - Amdmb.com