I have a full text index scheduled at every night in SQL server 2000.
Normally the status on the full-text catalog will either "Idle" or
"Incremental population in progress". But today I got "shut down". This
happened to one of our other server yesterday too. Since this happens
more often now, I want to find out why and what to do to prevent it
from happening again.  I went to system Application event log. This is
the error description I got.

"The critical error 9 occurred in project <SQLServer SQL0000800007>.
Error: 8007054e - Unable to complete the requested operation because of
either a catastrophic media failure or a data structure corruption on
the disk.  . The project has been shut down. The system is probably low
on the resources. Free up resources and restart the service.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp."

Event info:

Event Type: Error
Event Source: Microsoft Search
Event Category: Gatherer

We have almost 300G of free disk space. So the system can't be low on
resource. Anyone knows why this is happening? Any help will be greatly
appreciated.

Thanks in advance!