[Aide] Weird AIDE problem

[John Farmer]

I'm noticing some strange behavior on our server and I wondered if anyone 
had seen anything like this before.
Here is how it started. On this day:

Start timestamp: 2005-03-15 15:00:01

File: /usr/local/ssl/bin/openssl
MD5 : WJvJGt/2UCv5nHph2RqTpQ== , 0HH05buevntg0SmoSlavvA==


So I updated the aide database and then the next day.

Start timestamp: 2005-03-16 02:00:02

File: /usr/local/ssl/bin/openssl
MD5 : 0HH05buevntg0SmoSlavvA== , WPOUrghNI3gE9TDt4DNqXA==

So again I updated the aide database:
Start timestamp: 2005-03-17 02:00:03

File: /usr/local/ssl/bin/openssl
MD5 : WPOUrghNI3gE9TDt4DNqXA== , WJvJGt/2UCv5nHph2RqTpQ==


So I reloaded it one more time.
Start timestamp: 2005-03-17 19:00:01
File: /usr/local/ssl/bin/openssl
   MD5      : WJvJGt/2UCv5nHph2RqTpQ==          , 
0HH05buevntg0SmoSlavvA==



Around 2am and 2pm is when this server is under very heaving IO from doing 
backups.  The partition with the "changing" files is an EXT3 partition.
Anyone have any ideas on why this is happening?