Yesterday I told you an issue had been discovered with Update 1 for AutoCAD 2011 and AutoCAD LT 2011 resulting in Update 1 being removed for download until it could be corrected and re-released. Customers who have applied Update 1 for AutoCAD 2011 or AutoCAD LT 2011 and keep the Layer Manager open while using Plot, Render, Orbit, or Autosave could see AutoCAD become unstable when modifying any layer properties.
A hotfix has now been posted to correct this issue and can be found at the following location:
This hotfix is only for those customers who have already applied Update 1 to AutoCAD 2011 or AutoCAD LT 2011. If you have not already applied Update 1 you do not need this hotfix.
I will notify you here when the re-released Update is once again available for download.