On Tue, Apr 13, 2010 at 1:22 AM, Rosen Diankov <rosen.diankov@gmail.com> wrote:
> If processes immediately die without properly calling the ros shutdown
> methods, the node will stay registered with the core forever. the
> result is that the rxgraph slowly gets cluttered with dead nodes and
> makes it really inconvenient. we've tried 'rosnode kill', but that
> doesn't seem to un-register the node. because we want to keep a
> roscore constantly running on every robot, we cannot just restart the
> roscore....

hi Rosen,

You can try the semi-hidden 'cleanup' feature of rosnode:
  rosnode cleanup
It will ping all nodes, then offer to delete entries from the master
that correspond to the nodes that don't respond.

	brian.