I am running ubuntu server 11.10 inside a virtual box like a local development server for php programs. How ever, my apache installation is extremely standard, aside from virtual hosts obviously.

When I am delivering a request apache quickly consumes 100% cpu before the request is performed and falls to < 1% then. This server is an endeavor solely for myself, so my demands would be the only ones. The access logs do not show anything except my demands. Error log is empty. Any suggestions how to look for the reason behind this behavior? Could not find anything on the internet.

Thanks ahead of time!