Hi David .... For video uploads we use a progressive system that isn't supposed to ever time out.  However, what might be happening is a that since you're on a slow connection the network hiccups and looses data somehow and has to reset.    The Only time-out we have on our servers is for straight downloads, like when you directly upload an image without using the progressive upload system, and it's set for 40 minutes.  We don't want to loose you, or anyone, as a user and want to get to the bottom of this somehow.  If you can email me directly, by clicking the 'contact us' link below, with more detail we'll try to replicate your problem somehow and see if we can find a technical solution for this.