The VPS is probably overloaded/oversold, mysql processes are using all resources and WP querries are slow because of that. That could be a possibility, what about your internet connection? router?
For getting accurate answer on that one, please post the specs of the vps and the database size of your site along with the visitors count per day.
If you can not do that, all the replies here will be a probability and wud not construct anything solid for you.
Daily hits are increasing .
Yesterday
09 May 2011 8439 25971 355213 6.95 GB
Online 345 users
1 Bot
1 Member
It's wordpress site.
Site was fast at the beginning !
How to get database info ?
Em using kloxo