I recently began to have Adobe Reader Updater ask to download updates every week. I believe I was infected by this trojan. All four of the files in
C:\Program Files\Common Files\Adobe\ARM\1.0 were replaced with versions dated 03/24/2010. I recently un-installed and re-installed the latest version of Adobe Reader and the dates on these files are now 12/11/2009.
A couple of days ago I ran SuperAntiSpyware and it noticed I was infected by a Trojan. I'm not sure if it was for this problem or not. The bogus files mentioned above were still on my machine after SuperAntiSpyware cleaned my machine.