I have the following code which creates a webview that points to an external url hosting an admob ad and places the webview at the bottom of the current window:

var adUrl = "http://myadurl.com";
var adWebView = null;
var adTimeoutId = null;

displayAd();

function displayAd() {
    var loadingAd = true;
    //create new webview to contain ad.
    if (adWebView) {
        win.remove(adWebView);
    }
    adWebView = new WebView({ url: adUrl, scalesPageToFit: false, height: 48, width: '100%', bottom: 0, left: 0, right: 0 });
    win.add(adWebView);
    //setup webview event listener for load event.
    adWebView.addEventListener('load', function (evt) {
        if (!loadingAd) {//if not loading ad then it's an ad click.
            var url = evt.url.split('market://').join('http://');
            info("clicked ad " + url);
            //launch ad url in new browser window.
            Ti.Platform.openURL(url);
            //load a new ad.
            displayAd();
        } 
        loadingAd = false;
    });
    //get another ad in 20 seconds.
    if (adTimeoutId) {
        clearTimeout(adTimeoutId);
    }
    adTimeoutId = setTimeout(displayAd, 20000);
}

In android it works perfectly, the load event is fired just once as the the ad url is loaded into the webview. Then when you click the ad, it loads the ad destination url which it captures and triggers a launch of that url in the web browser.

However on the iphone simulator I've noticed that when the ad first starts up, it fires off the load event 2-8 times all within a split second. Is this a known bug or am I missing something?