LJUBLJANA (Slovenia), May 14 (SeeNews) – Austrian banking group Raiffeisen Zentralbank Oesterreich (RZB) said on Thursday its Slovenian unit, Raiffeisenbank Slovenia, posted an after-tax loss of 3.0 million euro ($4.09 million) for the first-quarter of 2009, compared to an after-tax profit of 2.0 million euro in the same period a year earlier.