[Samba] root postexec issue on both Samba 3.4.5 and 3.0.28

[Allen Chen]

Hi, there

I'm using Samba 3.4.5 and 3.0.28 on RHEL 5.2, and I noticed that on both 
samba servers
'root postexec' script in [netlogon] is executed automatically when 
logged in for around 11 minutes.
This makes me crazy to track when a use is logged out.
The man page smb.conf.5 says:
" postexec (S)
           This option specifies a command to be run whenever the 
service is disconnected. "

I don't understand when a user is still logged in, why 'root postexec' 
script gets called after 11 minutes.
though everything still works fine.

I used to have Samba 3.0.22 and 'root postexec' script was executed only 
when users logout.
It doesn't matter how long you have logged in.


How can I fix this issue?

Thanks,

Allen