From LH's web page:
"Like all other airlines, Lufthansa must comply with directives issued by ministries and air traffic control. Many European airports have closed. All German airports are closed until further notice. Munich airport is expected to close at 1800 UTC. All flights within Europe are cancelled till Saturday, 17th April 2010, ca. 1000 UTC. Passengers who have booked flights from the above-mentioned airports are requested not to travel to the airport [...]"
Good luck to everyone who planned to travel this week.