Telstra Blocking Google Ads

In a J&B HiFi store yesterday I tried looking at my web site using an Apple iPad 2 on display. The web page looked fine, automatically adjusting to fit on the small screen. The Amazon.com advertisements were displayed. But the Google AdWords advertisements were replaced by an error message:

Telstra IP Solutions Security Services
Web Page Blocked

You have tried to access a web page which is in violation of your internet usage policy.URL: googleads.g.doubleclick.net/pagead/ads?client=ca-pub-0383037795937695&format=160x600_as&output=html&h=600&w=160&lmt=1309665424&channel=1696327470&host=pub-1556223355139109&h_ch=00000&ad_type=text_image&ea=0&alternate_ad_url=http%3A%2F%2Fwww.tomw.net.au%2Fads%2Fgoogle_adsense_script.html&color_bg=FFFFFF&color_border=B0B0B0&color_link=000000&color_text=000000&color_url=111EAB&flash=0&url=http%3A%2F%2Fblog.tomw.net.au%2F&dt=1309670690781&bpp=16&shv=r20110622&jsv=r20110627&correlator=1309670690899&frm=4&adk=101579597&ga_vid=207115562.13Category: Advertising

To have the rating of this web page re-evaluated please click here. REMOTE_HOST: 203.48.59.76 HTTP_USER_AGENT: Mozilla/5.0 (iPad; U; CPU OS 4_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8F191 Safari/6533.18.5