什么原因导致我的VS2010在运行中经常出现未响应？哪个大侠能解释下！电脑的配置觉得没问题！

[08/12/11,19:14:16] Microsoft .NET Framework 3.0 SP2 x86: [2] Error: Installation failed for component Microsoft .NET Framework 3.0 SP2 x86. MSI returned error code 1603

[08/12/11,19:15:00] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 is not installed.

[08/12/11,19:29:28] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0ft .NET Framework 2.0a is not installed.

[08/12/11,19:43:12] Microsoft .NET Framework 2.0a: [2] Error: Installation failed