I would advise everyone here to uninstall any older version of Adobe Reader and install version 9.1.
I would also advise everyone to uninstall and any older version of Java Runtime Environment (Java) and install JRE 6.
Adobe Reader 7 ( and I also understand 8 as well) has an exploit in it that allows Trojans to be placed through it, even if you don't open it up ( the offending websites will do that for you).
I also read elsewhere that the older versions of JRE are also vulnerable.
I speak from experience!
I was taking an online survey from a site that I normally use. It redirects surveys to other sites at times.
When the page opened, all of a sudden my Adobe Reader 7 (fully updated) opened up in several places on the desktop.
Note that I had it turned off even on the start menu (even the updater). Using task manager you would never see it running.
The only time it would run of course is when a webpage called for it to do so.
So I ended up having to use task manager to turn it off in several places in addition to the 4 or 5 places that opened up in windows on the desktop!
I was using Trend Micro, Webroot SpySweeper, and Zone Alarm Pro Firewall at the time ( not to mention a Prosafe Hardware Firewall in my router with VPN).
Also, I always keep my Windows Patches current via update manager.
The only warning that I received was that it was being blocked by my Anti-Virus Program.
I ended up getting a Trojan and some nasty adware and other things ( in the registry keys as well) .
I couldn't do a search without being hijacked after clicking on the seach results. I also couldn't get into my registry and some other things as well.
I just got it resolved through help on this forum.
Please do yourselves a favor and update those 2 items!
[edit: changed subject to better reflect thread topic.]