Does anyone know why, when I try to open (or print) more than one PDF file, I can’t guarantee that all the files I selected will actually open? I understand why it would be slow — Windows warns you about this whenever you open a large number of files at once — but if I select thirty files, I want thirty files to open. Not three, or fifteen, or one.

I don’t really find I have this problem with other files. If I have thirty Word documents, for instance, I can select them all, click Open, and, although it will take a few minutes, they all will open. It’s really only with PDFs, and it happens regardless of whether I already have Adobe’s Acrobat reader up and running already or not.