I have done a fresh install of 4.5, as a basic firewall (ethernet-ethernet) and web server with Apache, PHP and MySQL. This is a dual CPU machine (Celeron 466) and I am using the SMP kernel. For some reason the system load has a tendency to stick at around 0.6-0.7, even if I shut down all services and pull the extranet cable. After a reboot it was OK (0.05-0.08) for a while.
I have not seen this with an earlier release. Anybody else having experienced this?