Access logs are composed of the following files:

.rawlog  -- these are the one-line-per-hit summaries of each day's hits
.uhdb.*  -- these are a dbm database of the set of hosts that have seen this
            site.
.smry    -- these are summaries of a day's activity, ready to be displayed

If you have all of your rawlogs, all the other files can be regenerated by
regenerateSmry.pl.*
Unless you modify the scripts, uhdb files are only kept for two days
(long enough for maintenance.pl to generate yesterday's uhdb's from the day
before's). .smrys are fairly compact, and are used to display the statistics
page.

*regenerateSmry.pl doesn't come with FOM2.4xx yet, because I didn't port it. If
you need it, send me mail and I'll convert it to run from the installer.