Hi Pablo, I am using p2os, so far I haven't seen any problem. I cann't comment on ARIA related package as I didn't try it. You can go ahead with p2os. Vinay -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ros.org/pipermail/ros-users/attachments/20100821/aa660166/attachment-0004.html>