SharePoint 2010 - Unable to attach debugger to custom workflow built using Visual Studio

What?

I have been developing a custom workflow for SharePoint 2010 using Visual Studio 2010. I have attached it to a library and started to debug it. The debugger got attached right the first time. But after making some code changes and redeploying the workflow, I was unable to attach debugger to my custom workflow anymore!

How to enable drag/drop of files in Visual Studio 2010 / GAC when running as an administrator?

What?

How to allow drag/drop of files in Visual Studio 2010 / GAC when running as an administrator?

Why?

When running as administrator in Windows Server 2008, programs such as Visual Studio 2010, GAC (explorer) wont allow users with even administrator rights to be able to drag and drop files.