Hi, Luca.A bunch of us put our heads together and came up with a zillion ways to make maps faster, then posted it to the Mapserver website. Go to the Mapserver site, in the documentation, and look for "how do I make my maps faster" or "vector optimization"
-- Gregor Mosheh / Greg Allensworth System Administrator, HostGIS cartographic development & hosting services http://www.HostGIS.com/ "Remember that no one cares if you can back up, only if you can restore." - AMANDA
