I have installed Adobe Reader 9.0 recently. But in hyperlink that points to another PDF document has not been responded. No error message has not been given even. It worked with Acrobat Reader 7.0 also. In Acrobat Reader 7.0 if you click the hyperlink and then if the relavant document is not existed, It give error message saying that that it could not found the document. But in Reader 9.0 it does not respond even. I have updated the Acrobat Reader 9.0 also and it is upto date.