($EURUSD, $MACRO) ECB's Stark says financial support to Euro-zone countries does not solve problems per se, just means to buy time. ECB's Stark says some Greeks do not understand how grave the situation is, the country has lived beyond its means for years. ECB's Stark says ECB cannot accept collateral bonds if there is partial or full default of a country. ECB's Stark says there are renewed tensions in money market, but not in the same dimension as we had after the Lehman collapse.-Reuters