Doesn't work on the Demo account either. Getting the same error:
2011-05-28 09:29:44.261 DEBUG c - Authorizing for data feed server [https://www1.dukascopy.com/authorization/demo] attempt [0]...
2011-05-28 09:29:44.262 DEBUG c - >> [https://www1.dukascopy.com/authorization/demo/auth?typus=0&munus=datafeed&appello=DEMO2tRzDe&licentio=f8a41541a8602b6f8871431e43310efc25d629a026c9996a25b7ab68ed2bdd9e&sermo=8da5f18c-cb73-4aae-9ae1-694482a0ff5f]
2011-05-28 09:29:44.822 DEBUG c - << [-1]
2011-05-28 09:29:44.822 ERROR c - Authorization for data feed server failed, access not authorized