hi, slam_gmapping 1.1.0 has been released. As with all 1.1.x stacks, this release is unstable and not recommend for most users. This release adds a couple of features that help with autonomous exploration: http://www.ros.org/wiki/slam_gmapping/ChangeList#A1.1.0_.282010-03-24.29 This is a good time to put in patches and requests for features to be added in the 1.1.x series: https://code.ros.org/trac/ros-pkg/newticket . brian.