Try downloading a version without the download manager.
Here is the latest installer version of Adobe Reader in English for Windows, without DLM, Adobe AIR, or Acrobat.com:
If you need a different version, locate it here on the FTP site ftp://ftp.adobe.com/pub/adobe/reader/
Note that there are updates available to version 9.1.3.
Same problem, IE sucks! They really gotta do something with it, I hardly use it anymore.