Outlook 2000 VERY slow in opening…

This is on a laptop running Win2k Prof on our LAN. I checked the configuration of Outlook – appears ok. I should note that I have 2 other laptops on our network (exactly the same) & they don’t have this problem. Nor do the dozen-odd other computers w/98.

After a couple mins., Outlook will eventually open – but painfully slow. Can’t figure out why this one particular laptop is different.

Exchange server 5.5. NT 4.5 server. Sonic firewall.

Any help greatly appreciated.