Hi All, We are using Exchange 2007 SP2 with Windows 2008 SP2 Last year after the power shortage, the exchange content index need to rebuild very oftenly. We have similiar behavious link below post. but not sure any hotfix or patch to fix it. Any one have idea? http://blogs.msdn.com/b/roopeshpattan/archive/2009/11/14/search-index-fails-for-all-users-in-a-particular-database-in-exchange-2007.aspx

Hi, I had a same problem, often i need to rebuild the CI. I have created a new database (this will create a new CI) moved all the users to new db. now all looks good.Kottees : My Blog : Please mark it as an answer if it really helps you.