High CPU Load

Not sure what’s causing this, but when I access this site, it causes the server CPU load to sky-rocket.

In the logs, it shows the server IP refreshing/requesting multiple times.

111.222.333.444 – – [28/Apr/2010:08:31:52 -0500] “GET / HTTP/1.0” 200 93750 “-” “WordPress/2.9.2; http://www.domain.com”
111.222.333.444 – – [28/Apr/2010:08:31:50 -0500] “GET / HTTP/1.0” 200 93750 “-” “WordPress/2.9.2; http://www.domain.com”
111.222.333.444 – – [28/Apr/2010:08:31:54 -0500] “GET / HTTP/1.0” 200 93750 “-” “WordPress/2.9.2; http://www.domain.com”
111.222.333.444 – – [28/Apr/2010:08:31:52 -0500] “GET / HTTP/1.0” 200 93750 “-” “WordPress/2.9.2; http://www.domain.com”

The site stats says it has 145K+ hits in the last two days. the thing that bugs me, is that it’s all from my IP. The CPU load gets up to 20% or so, but that cause my email server to not send/receive any e-mails.

This is a full dedicated system running DirectAdmin and Installatron for apps.

Any help with this will be appreciated. I did look through the forum, but I didn’t find anything that was like this.

Thanks,

Michael