If you are encountering frequent VS 2010 crashes when you are typing in the editor while Intellisense is popping up and/or being dismissed then you are running into this issue.
Patch Now Available
Please apply it if you are encountering any crashes with the VS 2010 RC, or if you have a tablet, multi-touch, screen-reader or external devices attached (including Wacom tablets, phones/ipods, and others that connect via USB).
Please make sure to submit any issues you encounter with the VS 2010 RC to us via the connect.microsoft.com web-site. Once you’ve entered the issue there please send me email (firstname.lastname@example.org) with a pointer to the issue and I’ll make sure the appropriate team follows up quickly.
Hope this helps,