Download a free virus scanner and scan the downloads you get to be certain your safe. Don't rely on someone else to inform you that the downloads are virus free, check yourself. I am sure OV makes every possible attempt that the main sites downloads are virus free, but they have no control over what files are downloaded on external links; such as those which are usually found in the forum.
You can find some free virus scanning apps in this thread
http://www.oldversion.com/talk/index.php?a...&st=0#entry4022