I get a nasty 'module not found kernel (20)' error when trying to use the ez search, but anything else seems to work. There is a search extension on its way that should do search a lot better then the one included with ez anyway..
Vincent: Is eZ relaying on Apache for Get values ? couldn't this be done in pure php ??
Oh, and I have not tested to turn on virtualhost mode yet either, but lighttpd should manage that from what I have learned.