首先重启电脑，无法解决的情况下执行以下步骤：

1. Kill Visual Studio
2. Open Visual Studio without loading a solution
3. Disable AnkhSvn as Source Control plugin (Tools->Options->Source Control->Plug-in Selection->None)
4. Disable "Document Well 2010 Plus" (VS2010) or "Custom Document Well" (VS2012) in Productivity Power Tools (Tools->Options->Productivity Power Tools) - I read that somewhere and it might have helped as well...
5. Close Visual Studio
6. Delete the solution's *.suo file. This is located in the same folder as the solution itself. NOTE:You will lose several settings for your solution, like currently opened files, breakpoints, bookmarks, current solution configuration & platform (e.g. Debug x86) etc.
7. Restart Visual Studio
8. Load the solution - it was much faster now!
9. Close Visual Studio
10. Open Visual Studio without loading a solution
11. Re-enable AnkhSvn and the "Document Well"
12. Restart Visual Studio
13. Open the solution - it was still loaded in seconds!

以上步骤亲测可用哦。。。。