Comment # 4 on bug 1051564 from Black Tavish

Apologies everyone, it was all my fault

Doing a system migration from an old server and an old Plone deployment 
installed a couple of xml2/xslt libraries in local which got picked up during
the installation of the patch or update bundle. yast itself started randomly
core-dumping as well after the update - all very distressing 

So removed these libs and apache & yast started behaving properly again.

Sorry for the noise