Pure-FTPD won't disconnect after maximum idle time

I am using Pure-FTPD and have the Maximum Idle Time (minutes) set to 15. But the server will not disconnect.

And in Dreamweaver, I have "FTP Connection: Disconnect after 30 Minutes Idle." But Dreamweaver will not disconnect.

I'm running ConfigServer's security & firewall, so I end up getting this email:

Time: Sat Jan 17 12:10:24 2009 -0500
Resource: Process Time
Exceeded: 5437 > 1800 (seconds)
Executable: /usr/libexec/openssh/sftp-server
Command Line: /usr/libexec/openssh/sftp-server
PID: 11397
Killed: No​

The Dreamweaver thing is an oddity, but I only really care about the server since it should be the authority. I'm wondering why neither are disconnecting. Anyone seen this before?

 

I should add that, in addition to Dreamweaver's FTP, I downloaded and tried the Transmit FTP client. The server will not disconnect it either.