So, a bizarre problem I've never seen before started taking place yesterday on my macbook pro. I'll select a given mediafire file for download in Safari, and it will dutifully appear in the downloads section of the browser. If you view the file under the "downloads" folder on the computer itself (running Lion), you'll also see it there. But the second it is finished downloading, the file disappears from the "downloads" folder and is moved straight to the trash! I'll have to go to the trash, get the file, and drag it back into the downloads folder. Does anyone have any idea why this would be? So strange! Before anyone asks: yes, all software is up to date.