WordPress Excessive CPU Usage HELP!

Hello,

So I’m running wordpress 2.7.1 and I just switched to a new dual core VPS with 4GB or ram. My server CPU is around 40 percent CPU and spikes up to about 50 at times. I’ve installed wp-super-cache and I’ve optimized the database.

What can I do to fix this problem? My new server should be more then enough to run my website.

I am going to upgrade my wordpress now to see if that will fix the problem.

Please suggest something.. I an tired of this battle…