Errors with time of people last logged on?

Okay, I had noticed this a few times but figured it was probably coincidence but I have seen it a few more times and it really makes me wonder.

 

This may be slightly confusing.  I have seen this In threads when there are at least a couple of posters.  

A person has a post and then the next person posts.  I have checked to see when the previous poster was last logged in and I noticed that it is the exact date and time that the latter poster posted their message.

 

As of this post I noticed this for the thread:  http://community.norton.com/norton/board/message?board.id=Norton_360&message.id=11542#M11542 . Thier are only two posters and only one post a piece.  Of course this is a fluid and will change the next time the 1st poster logs in.

 

I would experiment with it but then I would get booted for having multiple accounts :) So that won't be happening. 

 

If you happen to see this happening perhaps give a shout out here so that I may know if I am noticing something that is simply coincidental (also known as I'm tripping) or something that happens enough to warrant being called an issue.

 

Just as reference: 2nd post was at:  04-11-2009 01:03 PM / 1st post was at:  04-10-2009 09:26 PM / 1st user last logged in at: 

  •            Date Last Visited: 04-11-2009 01:03 PM