Install SQL 2005 SP3. You should not be running RTM any longer.
Traceflag 1400 was provided for testing only. Don't use it in production environment, not supported (but then neither is 2005 RTM any longer)
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability