Sounds like you'll want to talk to the Secunia support folks.
Secunia says it is a problem for Adobe! However I have just posted a message on Secunia's Forum.
Is that from the Secunia OSI or PSI?
My PSI does not give any warning for Adobe Reader 9.1.3 (version detected: 22.214.171.124).
P.S. if this is PSI, please know that installing an upgrade will not always automatically update PSI; you will have to re-scan.
Thanks for the different solutions. Using a combination of some of the solutions with some modifications the following solved the problem:
Backed up as a precaution, Removed Adobe Reader with Perfect Uninstaller, Downloaded and Installed latest version of Adobe Reader, Ran Secunia scan to check. It is interesting to note that although both Control Panel > Uninstall and Adobe's own uninstall appeared to work on checking the path neither removed the rogue file causing the problem but Perfect Uninstaller did. Surely there is room for Adobe to improvr their uninstall program.