adobe reader is at version 11.0.03
first I would uninstall all adobe reader on your pc, reboot and then go to adobe and download the latest version of reader:
http://get.adobe.com/reader/otherversions/
afterwards
1. what is your current antivirus?
2. do the following to ensure your system is clean, since adobe is blocked from updating probably from malware:
Click Start, Run and in the box enter:
msinfo32
Click OK, and when the System Summary info appears, click Edit, Select All (Ctrl-A), Copy (Ctrl-C) and then paste (Ctrl-V) the information back here in your next reply.
You can edit out any personal information.
Download, install, update and do full scan with these free malware detection programs:
Malwarebytes (MBAM): http://www.malwarebytes.org/products/malwarebytes_free
SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
Remove all found, reboot, and run again until scans run clean, these can be removed afterwards if you so choose.