Thanks to those who have tried yesterday's table A patch. Seems like it hasn't caused any problems (so far). Today's offering includes the table A tweak but it also increases one of the limits that determine when a route centre needs to be sub-divided. As far as I can tell, the limit was somewhat smaller than it should have been. So with this patch, fewer routing centres should be required (obviously depends on the map data). So please test this patch (it replaces the previous patch) and let me know if their are any issues. You must enable assertions, otherwise if the data structures overflow you won't know until mapsource/gps barfs. Cheers, Mark BTW - if you are not interested in routing over footpaths, changing them to a non-routable type will simplify the routing data further.