I wonder if you can upload large files from you inlaws pc? If you can then you're probably right, it is Qwest or it is on the client side . Have you tried sending in Active Mode? It is very unusual...

The Upload Queue is a feature of SmartFTP where you can schedule uploads with timing. The point of this was to see if it was the client, but that is probably not the problem as implied from the...

You've indicated that you upload a lot of stuff, have you ever been able to upload large files? If so, how much space have they given you for your server? Try using the Upload Queue and see if it...