[us...@httpd] Apache high load problem

Hi all, We have an Apache2 on our server, and we're getting very confused. Sometimes, but no periodically, the system load runs up very high, and we think it caused by apache. If I restart apache this time, the load falls back to a normal level. We've tried to watch and monitor a lot of things,

[us...@httpd] Broken pipe: core_output_filter: writing data to the network

Hello, I have a problem with just one site on my Server. When I type the Domain in my Browser, and it wait for 1-2 minutes and after it can be loaded. In my Errorlog i can read: [Sat Aug 22 16:00:34 2009] [info] [client 87.97.115.xxx] (104)Connection reset by peer: core_output_filter: writin