Hello everybody, 15 minutes ago i wanted to move some files a little to the bottom of the screen and I selected them and tried to drag them down with the cursor. When I did that, OS X 10.7.4 asked my password, I wrote it and pressed OK. After that only 5 folders and 3 files were left on the Desktop. The funny thing is that the USB icon is gone too. I had 20 folders and 13 files on my Desktop. I repeat that I only moved with my pointer,I did not press "Delete" or anything else,and "No" they are not in the Trash. Please help.Thanks.