Paolo, I don't think this problem is specifically related to pmapper. It looks like a low level problem of Mapscript. Have you tried to run the same requests with the same layers via the CGI or shp2img?
Have you tried a very simplistic/generic PHP Mapscript application like the one I put in the source as 'test_mapfile.phtml'? Have you tried if the problem still occurs if you use PHP via CGI instead of an Apache module? Armin Paolo Cavallini wrote: > Hi all. > I've reinstalled mapserver and mapscript, but I'm still having problems with > mapscript crashing apache. From /var/log/apache2/error.log I get: > > [Thu Dec 29 15:28:59 2005] [notice] caught SIGTERM, shutting down > [Thu Dec 29 15:29:01 2005] [notice] Digest: generating secret for digest > authentication ... > [Thu Dec 29 15:29:01 2005] [notice] Digest: done > [Thu Dec 29 15:29:01 2005] [notice] Apache/2.0.55 (Debian) PHP/4.4.0-4 > mod_ssl/2.0.55 OpenSSL/0.9.8a configured -- resuming normal operations > > and when I switch on and off repeatedly a raster, the program hangs. > Further attempts generate: > [Thu Dec 29 15:37:26 2005] [notice] child pid 10118 exit signal Segmentation > fault (11) > > This is related to window size: with smaller window, I get a crash at the 3rd > or 4th "on", with a larger one, at the second. > > All the best. > pc