Thanks for you Info.
Thats not so nice :-(
We have actually a DSL6000 connection that means 6000 kbit/s download and normally 512 kbit/s upload.
Available is DSL16000 with 16000 kbit/s download and normally 1024 kbit/s upload.
Is the SD picture trough the internet "good" when we upgrade the DSL line to 1024 kbit/s upload.
Faster DSL (faster upload) is not available at the moment.
The "bad" picture quality is being stream out that way due to your upload speed at the slingbox hosting location. If you can raise your package from your ISP at the hosting location to a package that has a higher upload bandwidth it will make a vast differance in your viewing experience.
To get a resonable picture quality for remote viewing, I'd recomend a minimum of 1mbps or better (1024Kbps)+ for your upload speed when viewing SD content.