I have made Rigol aware of this problem.
Do you have a good contact there? I'm sure we could put together a list of things that need fixing.
There's only a few on the DHO800:
1) Settings aren't saved properly. It doesn't remember the setting for horizontal knob push (fine/zoom) and the window transparency follows the waveform intensity when you reboot (set waveform intensity to 100% and reboot twice, your window transparency will be 100%).
2) Serial decoder threshold level doesn't use the probe attenuation setting, you have to set probe to 1x for it to work.
3) If you press "STOP" and increase the vertical scale it goes wrong after six clicks (trace on screen doesn't match the numbers down the side).
4) The window is the wrong size in the web control interface, it sets 1280x800 - the size of the DHO1000.
Maybe this could be a good thread to post JUST BUGS. No discussion of them here - there's already a thread for that, discuss them over there and post them here when they're confirmed/reproducible. Keep this thread as short as possible.