As doggenult said it seems that the problem is related to thumbnails.
I'm using and old release of ubuntu (11.10 with Nautilus 3.2.1) and have experienced the problem that doggenult commented. I usually generate large pdf files with latex. Sometimes when I navigate in the folder where the file is located, the file doesnt appear. So I go back to the previous folder and enter again and the file appears.
As regards the copy and paste problem, I close the window and open a new nautilus window and it works for a while until the problem appears again.
As doggenult said it seems that the problem is related to thumbnails.
I'm using and old release of ubuntu (11.10 with Nautilus 3.2.1) and have experienced the problem that doggenult commented. I usually generate large pdf files with latex. Sometimes when I navigate in the folder where the file is located, the file doesnt appear. So I go back to the previous folder and enter again and the file appears.
As regards the copy and paste problem, I close the window and open a new nautilus window and it works for a while until the problem appears again.