We recently released a VS2010 sp1 QFE KB2650605 to solve a VB editor debugging problemDuring VB web form debugging, VB web form may become un-editable if there are server tags insideIf you develop and debug VB web forms, you might be interested to download this QFE.

http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=40811 Best regards, Xinyang Qiu Web Platforms and Tools Team Read More......(read more).