.net framework v3.5无法安装!!!!!

net framework v3.5安装时在进度条到1CM左右就跳出来说安装程序出错。
我已经把之前net framework 所有版本删光，并把无关线程全部关闭，仍然无法安装！！！！！！！
[04/26/08,17:17:01] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0a. MSI returned error code 1603
[04/26/08,17:17:15] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0a is not installed.
[04/26/08,20:02:08] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0a. MSI returned error code 1603
[04/26/08,20:02:56] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0a is not installed.
[04/26/08,20:40:07] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0a. MSI returned error code 1603
[04/26/08,20:40:49] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0a is not installed.
.Net Frame 清理工具，清理后重新启动，再次安装

http://files.cnblogs.com/cutenet/dotnetfx_cleanup_tool.zip

装了IIS没有?先把windows已经安装的组件,IIS,SMTP之类的全部删掉试试...

你看看这篇文章,他和你一样不能安装
http://www.cnblogs.com/CuteNet/archive/2007/11/22/969060.html

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