rem: OpenLayers.Util.clearArray(this.features); 
add: this.features.length = 0; 
context:     refresh: function() {        if (this.tile) {            if (this.vectorMode) {                this.renderer.clear();                OpenLayers.Util.clearArray(this.features);            } else {                   this.clearMarkers();                OpenLayers.Util.clearArray(this.markers);            }                this.tile.draw();        }    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/ad52e8c6fd78af0ad983c4e99e4ac0c350b10ba1/WFS.js/buggy/lib/OpenLayers/Layer/WFS.js