What struck me down
I just heard from our doctor that they finally isolated the bug which I have been suffering from all week; it is campylobacter. Nasty, but also common. Well, I have recovered quite a bit yesterday and this morning, so I will be back at work on Monday. Or more exactly, taking part in an SAP-customisation training in Walldorf. (It is possible that in the next few weeks, I could develop Guillain-Barré syndrome as a side-effect, so I have strict instructions from the doctor to let him know if any new problems materialize.)