All, Has anyone tried creating an index in openldap to speed-up inequality searches ( eg of the form modifyTimestamp>=20111025162408Z ) on the modifytimestamp or createtimestamp attributes ? If so, what type of index did you create , did openldap perform reads faster than with no index and did the presence of the index slow down writes to openldap appreciably ? Many Thanks, Simon Flack. This e-mail has been scanned for viruses by the Cable&Wireless Worldwide e-mail security system. For more information on a proactive managed e-mail secure service, visit http://www.cw.com/managed-exchange The information contained in this e-mail is confidential and may also be subject to legal privilege. It is intended only for the recipient(s) named above. If you are not named above as a recipient, you must not read, copy, disclose, forward or otherwise use the information contained in this email. If you have received this e-mail in error, please notify the sender (whose contact details are above) immediately by reply e-mail and delete the message and any attachments without retaining any copies. Cable & Wireless Worldwide plc Registered in England and Wales. Company Number 07029206 Registered office: Liberty House, 76 Hammersmith Road, London W14 8UD, England