abuse prevention

[sniper7kills]

Hello All,

I just switched over from VHCS2 and so far this is much better.
My current setup is Debian etch, and i followed your install guide at:
http://isp-control.net/documentation/sta...ion/debian


But i have a few questions,

Is there a way to disable a user account if they exceed their limits or quotas?
For example if a user is using more disk space than allowed their account is suspended, they lose access to the FTP server, and when ever someone tries to visit their site a generic message appears that says they need to contact the system administrator.

Is there a way to have the stats update more often than every 30 min?

And Finally, what do i need to do to make the disk usage statistics work?