If you’ve still* got AutoCAD 2010 or AutoCAD LT 2010 installed Update 2 is available for download. As usual read the Readme and test anything crucial. You’ll find the the details and download links on Shaan’s post:
* Given it’s only April seems kind of strange to say “still” but I’ve moved on to 2011 already!
AutoCAD 2010 and AutoCAD LT 2010 Update 2 Released for Download - Between the Lines