[AWFFULL] no results some months

[Zack Galbreath]

Hi,

First off, thanks for making this tool.  We use awffull primarily to 
estimate how frequently our software tools are downloaded in any given 
month.  The problem we're experiencing is that some months awffull 
reports almost no traffic to our site.  You can take a look for yourself 
here:

http://public.kitware.com/stats/awffull/


Do you have any idea why this might be happening?  Can you suggest any 
places where we can look to help diagnose this problem?  What would I 
have to change in awffull.current if I wanted to "roll back time" and 
regenerate the missing stats for April 2010?


More information:

We're running the latest version of awffull that ships with Debian 
Lenny.  We run awffull nightly via cron job.  I confirmed that there are 
apache logs in the appropriate spot covering the time period in question.

We also run webalizer on this same server, and it doesn't suffer from 
the same problem.  See here for comparison:

http://public.kitware.com/stats/webalizer/

However, we prefer awffull because it allows us to track the top 500 
URLs by volume.  Webalizer doesn't do this.

Thanks in advance for any help you can offer me!

-Zack