When I try to upload files to my moodle website (course website for teaching) firefox often hangs. I don't even get a chance to select a file, once I click the browse for a file button and a popup window appears so I can search for the file on my computer, the pop-up window hangs. When I try to close out it just restarts firefox. This happens pretty frequently. I've deleted the download history and this did not help. Any help would be appreciated. Thanks! Michael