Freeradius not always denying invalid users

[Chris Moss]

We've been running Freeradius for a long time without any issues. We 
typically turn a customer off by changing the password in the passwd 
file. We use the passwd file for authentication. The issue is 
intermittent the customer is DSL so they will try to log in for a couple 
of hours constantly before being allowed to connect. Once the connect 
reseting their dsl connection forces them to login again. It will fail 
at this point, like it's supposed to. First before I get into posting 
any configs or that detail, has anyone else had similar problems?

Also, the logs sometimes show invalid shell with part of the passwd 
file. Not necessarily the actual shell portion though. It may show the 
home directory, or the shell, or even part of one of those such as 
"/bin/fal"

-- 
Chris Moss