[orca-list] Need help with Firefox in Vinux

[Mallard <mallard ilgerone net>]

Hello all,

I'm posting here, because I don't seem to be able to get through to the 
Vinux list, but this question concerns Orca as well, so it shouldn't be 
too much off-topic.

I've recently installed an image of Vinux 5.0 to try out. I love it, but 
I don't seem to have the commands I have with standard Ubuntu when I use 
Firefox with Orca.

In Ubuntu, i have much the same commands as in NVDA for one-letter 
navigation: K for links, H for headings, etc.

I know those were introduced after a certain build of Orca, but I don't 
know which one. I'm currently running Orca 3.14.3. What version should I 
have? Or, alternately, how can I add the desired comamnds?

Thanks for your help.

Ciao,
Ollie