I\'ll be debugging a site in Visual Studio 2010 and editing an *.aspx or *.ascx file, and without warning, it will lock up so that I can\'t edit it
*.aspx
*.ascx
Using "devenv.exe /resetsettings" will restore Visual Studio back to its original factory state.
You can also use "devenv.exe /log" to log Visual Studio activity for troubleshooting:
http://msdn.microsoft.com/en-us/library/ms241272.aspx