Well, that's interesting. I reported the FreezeBug to Rigol when I found it, and was assigned a number and was told there would be a new firmware in October. I get notifications of sales and equipment from Rigol but I have heard _nothing_ from them about this new firmware.
And it seems like it is causing problems and doesn't actually fix the important stuff like the freeze bug and the math horizontal error.
So I downloaded it from rosbuitre's link but I'm not going to install it just yet, due to the reports of slowing, flickering, not fixing the bugs, etc.
What is the matter with Rigol? It seems like they are really dropping the ball on this one. The "firmware" needs a complete rewrite, I think.