Make sure auto-update of statistics is turned on?

Reference:

SQL Server Performance-The Crib Sheet

I am in favor of having this feature off and statistics updated on schedule preferably nightly (off hours).  What is your take on this important performance issue?  Thanks.

Additional references:

nightly sp_updatestats versus weekly Update Statistics with fullscan

Update Statistics on Production Server

Reasons for disabling statistics auto update?

KB: "The auto update statistics feature of SQL Server relies on number of rows changed or updated to determine if statistics update is needed.  The statistics of a table will only be automatically updated if the number of rows changed exceed a threshold.  This threshold is documented in KB article       (http://support.microsoft.com/kb/195565)    

However, when a table becomes very large, the old threshold (a fixed rate – 20% of rows changed) may be too high and the Autostat process may not be triggered frequently enough. This could lead to potential performance problems"

http://support.microsoft.com/kb/2754171?wa=wsignin1.0

Kalman Toth Database & OLAP Architect sqlusa.com
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