Hi Gerd, in your opinion what is the current status of the performance branch? There seem to be no more fundamental changes so I would like to focus on merging it back to the trunk. Additional improvements can then be applied to the trunk. The performance improvements are great. Before merging back I would like to invite people (and give them the chance) to test it carefully. For this I will upload the complete world bounds so that anyone can participate. From my point of view the following things must be done before merging back: * Remove several System.out printouts. Please use the mkgmap internal logging system. * One note to the logging system: Instead of using log.info("There were "+n+" results") better use log.info("There were", n, "results") This avoids string creation in case the log message is not logged. * Please check the code with FindBugs or something similar * Is the source code well documented? * Is the licence header added to all classes? * The BoundaryPreparer uses options like "preparer-out-dir". Are these options documented? The name should be more specific (e.g. bounds-out-dir). WanMil