apache2-mpm-event 2.2.8-1ubuntu0.9 (amd64 binary) in ubuntu hardy

 The event Multi-Processing Module (MPM) is designed to allow more
 requests to be served simultaneously by passing off some processing
 work to supporting threads, freeing up the main threads to work on
 new requests.
 .
 This MPM is especially suitable for sites that see extensive KeepAlive traffic