There are a lot of situations where you have to walk through all Sharepoint lists. To do this the proper way, you have to talk to the WSS object model. I was looking foor a tool that could make my life in Sharepoint a bit easier and I found Sharepoint Harvester. With this simple library, you can do a lot of work with minimal code. For example:



public void DoYourThing() {
    SiteHarvester siteHarvester = new SiteHarvester();

    siteHarvester.Url = http://sharepointurl/;
     siteHarvester.Recursive = true;
    siteHarvester.ListFound += new ListFoundHandler( siteHarvestor_ListFound );
    siteHarvester.RunHarvester();

}

void siteHarvestor_ListFound( object sender, ListFoundEventArg e ) {
    e._list.EnableVersioning = false;
    e._list.Update();
}




Have fun with it!