throttling problem

[tvasquez at mail.mdanderson.org]

I am having the following problem:

$ ctlinnd mode
Server throttled Interrupted system call writing creating overview file --
throttling
Allowing remote connections
Parameters c 14 i 50 (6) l 1000000 o 243 t 300 H 2 T 60 X 0 normal specified
Not reserved
Readers separate disabled Interrupted system call writing creating overview file
 -- throttling
Perl filtering enabled
you have mail in /var/mail/news

What is the problem of writing the overview file?

Thanks