add: channel.loadFlags |= Components.interfaces.nsIRequest.LOAD_BYPASS_CACHE; 
context: function issueAsyncRequest( url, receiverFunc ){    var reader = null;    if (receiverFunc != null) {        reader = new UnicharReader( receiverFunc );    }    var loader =        Components.classes["@mozilla.org/network/unichar-stream-loader;1"]        .createInstance(Components.interfaces.nsIUnicharStreamLoader);    logMessage( "issueAsyncRequest( \"" + url + "\" )", "opening channel." );    var channel = getIoService().newChannel(        url, "" /* charset */, null /* baseURI */ );    loader.init( channel, reader, null /* context */, 0 /* segment size */ );}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/8c73ea0e85be532b32635bc10b6cd12610aa68f8/calWcapRequest.js/buggy/calendar/providers/wcap/calWcapRequest.js