I optimize monthly, just before my critical backups; additionally, I optimize all tables in the database.

There is however a reason to not do any tasks daily, as it locks the tables until it has been completed; which could affect users utilizing your forum at that time and corruption could start occouring should a lot of users be trying to post in that timeframe.

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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