Hi, I have been developing a site around Zope and the CMF and have got to a stage of loading on the data we have and testing the site. (zope 2.5.1, python 2.1.3, testing on win2000) The loaded data creates around 11,000 objects which are all cataloged in the default portal_catalog. The more objects that are added and cataloged the slower searches become as well as the whole site in general. Have used the product callprofiler and found 90% of the page creation time is more often than not taken up by the script which queries the catalog and returns the catalog results. The script does nothing else. This time generally varies between 8 to 30 seconds, but sometimes as long as 5 minutes! I can't work out what is going on with the catalog, or what is a normal query time for a catalog loaded with this amount of info. And the slow response is going to get worse as visitors add more content. Not good! Have tried recreating the catalog just incase something had gone wrong there. Played around with caching using RAMCache Manager as well as the control_panel cache settings with no reliable improvement. (Need to read up on the cache usage as wasn't quite sure of how best to set it up). Any ideas on normal response times for the catalog and anything I can look at or try would be fantastic. Thanks for any help. __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com