Outlook Performance and Mailbox Size or Item Count

Mailbox size or item count can have a serious effect on the performance you see in Outlook. The following article gives some good insight into why, and what can be done about it.

http://blogs.technet.com/b/exchange/archive/2005/03/14/395229.aspx

References:
http://blogs.technet.com/b/exchange/archive/2005/03/14/395229.aspx