I hope I've posted this in the correct place.

I scanned some PDFs on a Windows box, then copied them to my flash drive. I noticed that the computer kept hanging as I attempted several times. Then I copied the files to my Linux box. I also had some problems then, too.

Now, the first time I view Properties on a file, it works. Then I view Properties on a second file, the file manager hangs. This happens with any file, not just the PDFs I copied.

What have I done? I can see that if the files are corrupted, there might be some problems working with them. But even after I restart my computer, this hanging happens consistently (on the second file viewed).

Thanks in advance for any help.