Dear Friends,             In my Auto CAD 2011, While edditing the attribute  blocks by double clicking/ using commend , the key board language is changing. Means, while entering the new attribute values, Arabic letters are coming. After that, while using Keyboard only  Arabic letters are coming. For recovering this one , need to close the whole file . Then only recovered.  Awaiting your reply, KPP 

You are located in the UAE and you are seeing Arabic letters?  Why is that unusual?Have you checked your font files?