There's an update of phpMyGPX available at http://osm.erlkoenigkabale.eu/phpmygpx.php
This web application based on PHP5, and OpenLayers helps me to manage all my GPX files and trackpoints and waypoints in a MySQL database.

Some features were added:
- added bookmark feature
- added handling of waypoints: extract from gpx and shown on map
- added nicer elevation chart and cleaned up the 'GPX details' page
- added more database stats: total distance
- some minor fixes and improvements

Feel free to try and comment...