A support call was recently was logged and there was an error with activating an AutoCAD 2009 based products. We tried the following TS's but it did not work:
Hotfix - Autodesk Activation Update
http://usa.autodesk.com/getdoc/id=DL5620053
Activation error 0.1.0011 or 11.1.6011 on computers with Serial ATA hard disk controllers
http://usa.autodesk.com/getdoc/id=TS1052460
Upon further investigation, we were able to resolve the issue with this TS:
Activation errors when running program on a machine using external USB devices
http://usa.autodesk.com/getdoc/id=TS1059719