*SNB: Inflation Will Become Slightly Positive, Amounting To 0.4% In 2010 And 0.3% In 2011

*Polish Zloty Climbs To 3-day High Of 3.2345 Against US Dollar

*SNB Keeps GDP Forecast For 2009 Unchanged, Expects GDP To Fall Between 2.5% And 3%

Austria Q1 Jobless Rate Rises

*Swiss Franc Drops To 3-day Low Of 1.5128 Against Euro Amid SNB Announcement