I've had this problem occur for me in the past.  In fact one user had this issue with importing to Laserfiche and the issue seem to spread from one user to another.  The common thing is they all share the same scan station.  Upon investigating I found that a user might leave from the station and still be logged into Windows. So, the next user that needed to use Laserfiche would just click on icon and proceed while still under the previous users Windows account. The attributes would then get out of whack. This would go on from one user to the next and the problem spread like a virus.  Well, I knew a virus certainly was not the cause.

So here is what I understands happens the user's attributes get stored both in Laserfiche under the user profile and store in the registry of the computer they are using.  When the user logs in Laserfiche compares the two and updates settings in both places.  So, when you have a user logging into Laserfiche on a system where another user is already logged into Windows, the attributes get messed up.

I solved this by activating AD on the Laserfiche user account for all users and training the users to check the Use Windows Authentication while logging into Laserfiche.  This way they had to be logged into Windows in order to log into Laserfiche under their account.