Winter is upon us, and the last couple of days have seen rumors rumbling about the possibility of another gas interruption - due to payment problems at Ukraine's end.  It is alleged that Ukrainian Prime Minister Yulia Tymoshenko alerted Vladimir Putin to the fact that President Viktor Yushchenko was impeding 'the normal partnership between the Central Bank, which had the gold reserves at disposal, and the government', thus jeopardizing payment.The good news for those in Europe looking forward to a toasty winter is that analysts are suggesting that this talk is more hot air fueled by political rivalry between Viktor Yushchenko and Yulia Tymoshenko (who will race each other ,along with Victor Yanukovych, to the post of ...