SAS Closing Down For Christmas?

Hi,
I am planning to start my holiday between Christmas and Neew Years Eve and was considering SAS with an commuter flight from Germany.
To my surprise I realised that that HAM, HAJ, BER, DUS and even AMS is downgraded from the usual 4-5 to 1 flight a day. That makes many long haul connections in CPH impossibel.
Other Star carriers like OS or LX keep most of their frequencies to their hubs during the festival days.
What is happening with SAS? Is it a computer failure or do they virtually close their hub?

Please help.

I didn't find the right solution from the Internet.

References:
www.airliners.net/forum/viewtopic.php?t=411865
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Thanks