My operating system is XP. My problem is that Outlook ( from Office 2000) is responding very,very slowly. It takes at least a minute to open an e mail and often much more. It is slightly quicker to move between new e mails once the first one is opened by using the up and down arrows. I heard it may be that Outlook is searching for files. I did have Palm and also PsiWin software ( for synchronising with a Psion ) and would get a "missing file" message on start up of Outlook so I have removed the Psi Win software as well as Palm software through "Add remove programmes". I also have put Nokia PC Suite software on the machine to synchronise which seems to be OK. In the past Outlook would be slow because the inbox was so full , so I have archived all but the last two months' e mails. Not sure if it is relevant , but it seemed that the slowdown began sometime near putting a new scanner ( Fujitsu Scansnap S510 - brilliant ) software on the machine including Adobe Photoshop and Reader software. Thanks in advance. Peter PS I have reinstalled teh Outlook software but to no avail.