Thanks Koen, I finally managed to install ROS on my BB-xM, though (I am 
still open for any suggestions). I did the following:

   1. Installed Ubuntu 10.04 as described here:
      http://elinux.org/BeagleBoardUbuntu#Lucid_10.04.2
   2. Configured network access
   3. Built ROS from source as described here:
      http://www.ros.org/wiki/cturtle/Installation/Ubuntu/SVN

I had some problems with installing dependencies via apt-get (I think 
the build script should be a little more verbose about what it is 
currently doing, which would have spared me some time), but I finally 
got through this. A 4GB microSD is enough.

Regards,
Marcin

> We've been upgrading our embedded ROS installation at our lab for a
> course, we'll be able
> to release new guidelines soon.
> The installation you mentioned was tested on our Beagleboards (old
> version) and not yet
> on our Beagleboard-xM (but I assume this should also work just fine)
> The new guidelines will be for our xM series.
> I'll ask for the cross-compile toolchain tomorrow.
>
> Koen
>
> On 12 February 2011 10:45, futureignobel<futureignobel@gmail.com>  wrote:
>> Hi,
>>
>> I'd like to install ROS on my BeagleBoard-xM. I've tried installing as
>> described here: http://people.mech.kuleuven.be/~kbuys/embsensor.html but
>> with no success (Beagle won't even blink a LED). Any one out there
>> already done that?
>>
>> Any suggestions welcome.
>> _______________________________________________
>> ros-users mailing list
>> ros-users@code.ros.org
>> https://code.ros.org/mailman/listinfo/ros-users
>>
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users