[转载]自ISA Server Product Team Blog
原文：
ISA Server and Windows Server 2003 Service Pack 2
Recently Microsoft released Service Pack (SP) 2 for Windows Server 2003 (http://www.microsoft.com/technet/windowsserver/sp2.mspx). We tested ISA Server with the Windows service pack quite extensively. Unfortunately we discovered after the release of the Windows service pack that there are several issues that have potential ill-effects on ISA Server. This blog summarizes the currently known issues, and suggestions on how to mitigate those issues.
1. If you run ISA Server 2004 Enterprise Edition with or without the ISA Server SP2, you must install ADAM SP1 on the ISA Server Configuration Storage Server prior to installing the Windows Server 2003 SP2. ADAM SP1 can be downloaded from http://www.microsoft.com/downloads/details.aspx?FamilyId=9688F8B9-1034-4EF6-A3E5-2A2A57B5C8E4&displaylang=en.
If you install Windows Server 2003 SP2 without first installing the ADAM SP1, ISA Server will not start after the installation, and you will have to uninstall Windows Server 2003 SP2. Further information is available in the Windows Server 2003 SP2 release notes, at http://technet2.microsoft.com/WindowsServer/en/library/ed5382af-e819-4d33-ace0-225d31b7ab751033.mspx?mfr=true .
2. If you run ISA Server 2000, 2004 or 2006 Standard or Enterprise editions on a multi-core / multi-processor 32-bit computer, and the CPU is heavily utilized, you might experience performance degradation in certain deployment scenarios after installing Windows Server 2003 SP2. The issue stems from a change in interrupt handling introduced in SP2.
To correct the issue you must download and run the Interrupt Affinity Tool (intfiltr) available in Windows Server 2003 resource kit (http://www.microsoft.com/downloads/details.aspx?FamilyID=9d467a69-57ff-4ae7-96ee-b18c4790cffd&DisplayLang=en).
You can read about installation and usage of intfiltr.exe in http://support.microsoft.com/kb/252867.
3. If your network adaptors (NICs) support receive-side scaling (RSS), then in certain NAT scenarios ISA Server 2000, 2004 or 2006 Standard or Enterprise editions might not transfer packets from one NIC to the other after installation of Windows Server 2003 SP2.
To correct the issue you must disable RSS support --- follow the instructions in http://support.microsoft.com/default.aspx?scid=kb;EN-US;927695.
译文
注：译文与原文相比有较大修改：
ISA Server 与 Windows Server 2003 SP2 的兼容性问题
在 Windows Server 2003 SP2 正式发布以后，经过 ISA Server 开发组的测试，发现在以下三个方面存在兼容性问题：
1、如果运行的是 ISA Server 2004 企业版，那么你必须先在配置存储服务器上安装ADAM SP1，然后才能安装 Windows Server 2003 SP2，否则将会导致ISA Server 2004 无法正常启动。ADAM SP1的下载地址为：
http://www.microsoft.com/downloads/details.aspx?FamilyId=9688F8B9-1034-4EF6-A3E5-2A2A57B5C8E4&displaylang=en
2、在 Windows Server 2003 SP2 中引入了新的中断处理方式，但是在部分32位多处理器计算机上，如果CPU具有较高的利用率，那么可能会导致 ISA Server 的性能下降。如果出现这种问题，可以使用 Windows Server 2003 资源工具包中的中断关联工具进行修改。
中断关联工具（intfiltr.exe）下载地址为：
http://www.microsoft.com/downloads/details.aspx?FamilyID=9d467a69-57ff-4ae7-96ee-b18c4790cffd&DisplayLang=en
相关使用说明为：
http://support.microsoft.com/kb/252867
3、如果你的网络适配器支持接收端调节（Receive-side Scaling）功能，那么在特定场景下可能出现NAT不能正常工作的情况，相关信息请参见
Windows Server 2003 SP2 与 NAT 的兼容性问题
