I wrote this some time ago:

"I really like this quark and also hope that it will be in the range for a long time to come. But unfortunately it always goes bad before the expiration date. I've just had one with an expiration date of 04.10.2012. The pot was totally full and it almost "chased" it away.
Unfortunately, this often happens.
Is this a known problem? "

The problem is unfortunately still there, yesterday 14.11.2012 I had another one with an expiration date of 22.11.2012. Please pass this on immediately, because it can't be like that.