I have found that my WordPress install seems to be running especially slow. Now I am running multi-site, but still, I only have maybe 200 posts across all sites, so it should not be a big deal. After a quick google I found this post on the Webfaction forum. Here is the recommended steps that sped things up for.
Add this to your
~/webapps/[wordpress-app-folder]/.htaccess file after any rewrite rules:
Action php53-cgi /php53.cgi AddHandler php53-cgi .php
Then SSH into your WordPress application folder (where the .htaccess file is) and add this symbolic link to PHP:
ln -s /home/php-cgi/php53.cgi php53.cgi
I hope it helps with you install as well.