Ok, it's coming down now... but at 8kB/s, it's going to take ten minutes
18 minutes at 12kB/s. That site is slow for free users.
Yeah the photo probably doesn't do the scene justice, particularly because things are so far away and flat. If it were possible to shoot it from very high up, it might solve that problem. But things may just be too far away for them to come up at any level of detail, esp. with the flat perspective.
What's your camera and lens?
It looks quite blurry. Is that the way your photos generally look or was it introduced by the panorama software?
What's your panorama software?
I've only used Panorama Factory and Photoshop. Both of these should do the joins better without needing to do anything manually.