Gmapping with sick_tim310 troubles [closed]

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G'day everyone,

We're trying to use the sick_tim310 laser scanner to try and build a slam map. We are first launching the sick_tim310 package using

rosrun sick_tim3xx sick_tim310

and then running the gmapping package

roslaunch turtlebot_navigation gmapping_turtlebot.launch

When the gmapping package launches, we get the following warning and we are not able to build a map

[ WARN] [1389919537.481403314]: Message from [/sick_tim310] has a non-fully-qualified frame_id [laser]. Resolved locally to [/laser].  This is will likely not work in multi-robot systems.  This message will only print once.
[ WARN] [1389919551.824802632]: MessageFilter [target=/odom ]: Dropped 100.00% of messages so far. Please turn the [ros.gmapping.message_notifier] rosconsole logger to DEBUG for more information.

We've also tried changing the name of the topic to which the laser scan publishes by launching the sick_tim310 package the following way;

rosrun sick_tim3xx sick_tim310 scan:=/laser

and then we tried running the gmapping package again, but this time, there are no warnings but mapping just does not start. All we see is the following output;

    SUMMARY
========

PARAMETERS
 * /rosdistro
 * /rosversion
 * /slam_gmapping/angularUpdate
 * /slam_gmapping/astep
 * /slam_gmapping/delta
 * /slam_gmapping/iterations
 * /slam_gmapping/kernelSize
 * /slam_gmapping/lasamplerange
 * /slam_gmapping/lasamplestep
 * /slam_gmapping/linearUpdate
 * /slam_gmapping/llsamplerange
 * /slam_gmapping/llsamplestep
 * /slam_gmapping/lsigma
 * /slam_gmapping/lskip
 * /slam_gmapping/lstep
 * /slam_gmapping/map_update_interval
 * /slam_gmapping/maxUrange
 * /slam_gmapping/odom_frame
 * /slam_gmapping/ogain
 * /slam_gmapping/particles
 * /slam_gmapping/resampleThreshold
 * /slam_gmapping/sigma
 * /slam_gmapping/srr
 * /slam_gmapping/srt
 * /slam_gmapping/str
 * /slam_gmapping/stt
 * /slam_gmapping/temporalUpdate
 * /slam_gmapping/xmax
 * /slam_gmapping/xmin
 * /slam_gmapping/ymax
 * /slam_gmapping/ymin

NODES
  /
    slam_gmapping (gmapping/slam_gmapping)

ROS_MASTER_URI=http://192.168.137.8:11311

core service [/rosout] found
process[slam_gmapping-1]: started with pid [20289]

And then nothing proceeds to happen. Could anyone please be able to shed some light on this issue? Many thanks.