Outlook requesting data from server

When using outlook 2000, 2002, or outlook xp, I have
encountered a problem with a box appearing with a bar
running across requesting data form the exchange server,
it pops up at least 3 to 4 times a day. I have checked the
server and the mailboxes etc are below the limit, so I
cannot see why it keeps asking for a request when I expect
the emails to be flowing in.

please help?

I have no problem with outlook 2000 but I got the same
massage"Outlook requesting data from server" after I
upgrade to outlook 2003. All other outlook 2000 clients
working fine.
>-----Original Message-----
>When using outlook 2000, 2002, or outlook xp, I have
>encountered a problem with a box appearing with a bar
>running across requesting data form the exchange server,
>it pops up at least 3 to 4 times a day. I have checked
the
>server and the mailboxes etc are below the limit, so I
>cannot see why it keeps asking for a request when I
expect
>the emails to be flowing in.
>
>please help?
>
>.
>

my experience has been, in an XP environment, removing the microsoft firewall resumes performance back to normal operation or no delays.