1) How are you uploading/downloading? (for Remote Upload, include where you're remote uploading from, what you're receiving - error or in queue. For FTP include the client you are using. Any 3rd party programs for upload or download, include)
2) What error are you receiving
3) When did this error occur
4) Your account ID - are you free/premium
5) Where are you located - a speed test for your connection
6) A traceroot to the server you are receiving issues from (if you know how to do this) or the link to the file which is giving you issues - if download, please send your IP as well
The more information we have, the easier it is for us to identify issues, the root cause, and enables us to address it in a timely fashion. DO NOT post this information on the board, because you will be posting your personal information in public.