I finally succeeded installing Adobe Reader X using Chrome (which I could not achieve via Firefox or Explorer), it seemed to work like a charm for one use. Now, when opening a PDF file, every open program or desktop icon is grossly enlarged. In between checking why this might be happening I am getting messages talking about a problem with my system configuration. Since I had been able to use a previously installed AR X version for a months or longer without problems, I wonder what interference has been happening. Any clues?