So far just about everything I've encountered in Visual Studio 2005 has been fantastic. Some of the most subtle changes to the IDE have made my life dramatically easier.
The one exception to this is the new Toolbox. Aside from a very cluttered Tree View, it dynamically loads up all this stuff from my projects. I'm sure some people love it but with a very large project it takes 2-5 minutes to display the toolbar.
This wouldn't be so bad if I could just turn it off, but so far I can't seem to find any way to do so. UPDATE:
Thanks to Raj
I was able to turn off the auto-population feature. Simply set AutoToolboxPopulate to False under Windows Forms Designer section of the Visual Studio Options dialog.
I must have looked though the Options dialog a thousand times and never noticed this. Maybe that sleep thing would
be a good idea after all. :)