As with other service packs, caveat emptor. Windows 2000 SP3 installed without error messages for us on Microsoft Web server, Domain Name System, domain controller and IBM database server boxes running Windows 2000 Server, and we've been running those systems on SP3 for a week with no application breakage.
Others haven't had that experience. SP3 early adopters posting their difficulties on Microsoft's support newsgroups report crashes, blue screens on boot and other troubles on machines. Machines with Logitech Inc. mouse drivers, Symantec Corp.'s Norton Personal Firewall and Promise Technology Inc. Ultra100 IDE controllers all had compatibility problems with SP3 for at least some posters. Our memory of Windows NT Service Pack 6, which broke IBM's Lotus division's Notes servers, is still a recent one, too.
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