For users on Adobe Reader version 9.x or earlier, Adobe strongly recommends upgrading to Adobe Reader X. When you upgrade, you can take advantage of the security of Protected Mode in Reader. It helps safeguard your computer software and data from malicious code. The latest version of Adobe Reader X is 10.1.3, for which full installers are available for download from here for English, French, German, Japanese, and Spanish. For other languages, install Adobe Reader X 10.1 from here. Then, update it to the latest version by applying 10.1.3 patch which can be downloaded from Support download Pages.
For Adobe Reader version 10.x, the latest available update is Adobe Reader 10.1.3. To update Adobe Reader 10.x, download and install Adobe Reader 10.1.3 from Adobe Reader Download Center. Adobe Reader 10.1.3 patch is cumulative and hence can be applied on any existing version of Adobe Reader X.