Dear all,

after a long break I am returning to two larger projects of mine, and  
to celebrate, I upgraded
to ConTeXt from the current TeXLive.

To my surprise, mostly everything looks as before (which is good), but  
all my text backgrounds are gone.
A little search brought up Wolf-gang's example (from 1-20 2009)

\setupcolors[state=start]

\definetextbackground
[example]
[location=paragraph,
background=color,
backgroundcolor=middlegray,
frame=off]

\starttext

\input knuth

\startexample
\dorecurse{4}{\input knuth\par}
\stopexample

\input knuth

\stoptext

which doesn't produce any backgrounds - neither on my installation,  
nor at ConTeXt live.
What is the current way to produce backgrounds around text snippets?  
I'll need/want it
framed with rounded corners eventually, too.

Thanks!