Ubuntu file system going into "lockdown" mode

[edwardp-mh2Nk+tgbQM at public.gmane.org]

Bill Bogstad wrote:
>
> This normally happens due to disk not memory errors.  You should
> really check the system log files in /var/log for error messages.  You
> should also consider installing smartctl and using it
> to query your drives for their internal error logs.
>    

I just installed smartctl on it and it's using the GUI (GSmartControl) 
to run a full test (extended self-test) on the hard drive.

Thanks.