Hi Tomasz
Upload speeds depend on many factors - connection, your location, your internet connection, your internet provider's throttling, etc. I constantly get upload speeds of 500kB/s (not kilobits but kilobytes). From this I judge the problem is not at the side of our FTP server.
As for the panorama that has failed processing - we are having some problems with processing these days. It usually works, I would say 90% of time, but there are hours, especially during weekends, when it doesn't. We are deeply sorry for these problems that we are trying to fix. The solution is always the same: Try to upload your files later. We also (the best way we can) always try to reprocess any failed photos when we discover them so chances are your photo is already processed in your account now.
Jan