The toolbox in Visual Studio Professional 2008 has somehow ended up with 12 instances of each control. They are just the standard controls, no third party controls, and I h
"Reset Toolbox" didn't work out for me.
Deleting the *.tbd in the following dir on Windows 7x64 worked for me... C:\Users[Current user]\AppData\Local\Microsoft\VisualStudio\10.0