Microsoft released VS 2010 RC patches to fix following issues
- Patch that fixes crashes with Tooltip invocation and when hovering over identifiers
- Patch that fixes issues with the Web Forms designer not correctly adding controls to the auto-generated designer files
- Common Cause of Intellisense and IDE sluggishness on Windows XP, Vista, Win Server 2003/2008 systems
- Improved Text Rendering with WPF 4 and VS 2010
