Hi Eitan!
> Thanks so much for finding this, I've fixed the bug in both trunk (rev
> 28749) and the 1.0 branch (rev 28750) of navigation and the fixes will go
> out with the next patch release of both the 1.0 and the 1.1 series. I'll try
> to push out patch releases either later today or tomorrow and I believe it
> should fix the problem you're seeing.
>   
The credit should go to my colleague Christoph, who had a quick look at 
it and was wondering about that cast ;)

Thanks for the fix! I'll let you know how that goes.

Cheers,
Armin

-- 
Armin Hornung                              Albert-Ludwigs-Universität
www.informatik.uni-freiburg.de/~hornunga   Dept. of Computer Science
HornungA@informatik.uni-freiburg.de        Humanoid Robots Lab
Tel.: +49 (0)761-203-8010                  Georges-Köhler-Allee 79
Fax : +49 (0)761-203-8007                  D-79110 Freiburg, Germany