we have been having trouble uploading files here. For us, it started last night. We fill in all the necessary info and click the button for bigger files, then go to upload. The problem lies here, we can't get the file to do so. It acts as if it is uploading, but just hangs there. 

The page just hangs there and keeps "refreshing" but never moves. What is going on? We had to put our file on temporary server so our visitors could download it.