If you quit Maya, delete the userPrefs.mel file in your user’s prefs folder and restart Maya, this usually fixes any problems that are caused by corrupt settings. That way, you can leave your colour...

Maya 2013
Win7, 64bit-updates are current.
4GB Ram

The first four days of use I had no issues. Day five and six? One new issue after another.
1) Occasionally, 'Extrude' will DELETE the face of...