On a Windows 2000 server hosting about 15 domains, some web sites will load very very slowly via a browser — while others load extremely fast, as normal. At first, it seemed that restarting the DNS service fixed the problem, but not this time. Have reset IIS, restarted DNS, and rebooted. Affected sites may vary. This problem just started “out of the blue” a couple of days ago. Urgent assistance needed and greatly appreciated!