I talked to my Prof. yesterday. I now have a date for re-entry to life and I have a topic for my PhD (which includes all the stuff I have done sofar). And suddenly the winter depression is gone (more or less). It seems to have been pretty bad, I today found two months of letters not opened, including pretty important ones. I managed to talk to people I should have talked a long time ago. And maybe I'll get normal some time soon. At least the hope is arising :-)