[Dovecot] Outlook 2002 SP3 & Dovecot 0.99.13 Runs really really slowly.

[M.d.]

   Hi, 
      I'm seeing a problem that I'm hoping someone can help with.  Neither Googling or searching
   the list archives have turned up anything useful.

      I'm running Dovecot0.99.13 on Fedora Core 3 and things work fine when using either
   Thunderbird 1.0 or Outlook Express as clients.  Outlook (2002 SP3) on the other hand
   runs incredibly slowly.

   Any ideas, would be greatly appreciated.
   Thanks,

    Md