WPAverager helps you to create more exact landmarks / waypoints with your S60 3rd Edition device. (Might/should work on other phones supporting JSR179 as well)
You just set how many coordinates it should record and how many of the best ones should be used to average the final location. Then you can save it to the landmarks store. That's it.
You should experiment with the values to get the best results.
Download here
