Adobe Reader 8.x End of Life 11/3/11

Here is Adobe's official life cycle page listing what their support commitment is to their various products.  Notice that Adobe 8 Reader went end of core support on 11/3/2011.   Adobe Reader 9 is the oldest fully supported Adobe Reader product.  If you are on anything older than Adobe Reader 9, you should upgrade to Adobe's current, fully supported Adobe Reader offerings.  You can read about this and other Adobe products on their website at this page: https://www.adobe.com/support/products/enterprise/eol/eol_matrix.html#86