关于SQL2008安装失败园子里面很多文章，可我碰到了不一样的错误：
所有服务全部失败，都报这个错误：
Code'''''''
Property(S): Preselected = 1
Property(S): ACTION = INSTALL
MSI (s) (D8:00) [08:21:28:714]: Note: 1: 1708
MSI (s) (D8:00) [08:21:28:714]: 产品: MSXML 6.0 Parser (KB933579) -- 安装失败。
MSI (s) (D8:00) [08:21:28:714]: Windows Installer 已安装产品。产品名称: MSXML 6.0 Parser (KB933579)。产品版本: 6.10.1200.0。产品语言: 2052。安装成功或错误状态: 1603。
MSI (s) (D8:00) [08:21:28:714]: Cleaning up uninstalled install packages, if any exist
MSI (s) (D8:00) [08:21:28:714]: MainEngineThread is returning 1603
MSI (s) (D8:48) [08:21:28:808]: No System Restore sequence number for this installation.
=== 记录停止: 2009-4-7 8:21:28 ===
MSI (s) (D8:48) [08:21:28:808]: User policy value 'DisableRollback' is 0
MSI (s) (D8:48) [08:21:28:808]: Machine policy value 'DisableRollback' is 0
MSI (s) (D8:48) [08:21:28:808]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (s) (D8:48) [08:21:28:808]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (D8:48) [08:21:28:808]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (D8:48) [08:21:28:808]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2
MSI (s) (D8:48) [08:21:28:808]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2
MSI (s) (D8:48) [08:21:28:808]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (s) (D8:48) [08:21:28:808]: Restoring environment variables
MSI (c) (48:A0) [08:21:28:808]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (c) (48:A0) [08:21:28:824]: MainEngineThread is returning 1603
=== Verbose logging stopped: 2009-4-7 8:21:28 ===
看此错误，似乎是那个：MSXML 6.0 Parser (KB933579) 已经存在，到控制面板看看，果然，已经到Sp2（KB954459） 版本了，把它卸载掉，再安装，OK。
印象中好像是打开了Windows Update 自动安装的呢，应为系统是刚刚装好了裸机，打好64Bit SP2 -〉NF3.5 Sp1-〉Fix等等。
最后再打开Update自动把MSXML 6.0更新到SP2 就全部OK了。