From time to time in the DP-thread there's been "rantings"

I found these links on the internernet that might explain this experience for
some users.
http://www.anandtech.com/mac/showdoc.aspx?i=2520&p=1
and
http://www.anandtech.com/mac/showdoc.aspx?i=2436
The articles are long technical and pretty thorough, but offer some interesting
insights into why performance may be lacking in OS-X.
I'll grant that running DP-4.x on a G5 is not the same as running a G5
as a serverkonfiguration with the Appache webserver & MySQL database.
But still....
Cheers: Dixiechicken