[OT] Apache log analysis packages

[Chris Metcalf <chrismetcalf@gmail.com>]

I'm looking for suggestions on a good Apache log analysis package for
my web server. I've used Sawmill (www.sawmill.net) to do log analysis
at work (and it is awesome), but I'm looking for something free (as in
beer and freedom).

I'm running multiple sites using mod_dyn_vhost, so it needs to have
some ability to filter the logs based on something I can configure.

Features I'm looking for:
* Basic analysis like total hits, total unique visitors, top pages,
top referers, stuff like that.
* Broken link/ref listings
* Some more advanced analysis like the stuff that Sawmill can do, like
session analysis, worm identification, etc.
* It should either be dynamic or be pretty quick, so I can generate
results at will.
* It would be nice if I could create "accounts" for the stats pages,
so users could view their own stats.

Suggestions would be awesome!

Thanks,
-- 
Chris Metcalf
chris@chrismetcalf.net
http://chrismetcalf.net