Bug#1040452: libc6: upgrading libc6 to version 2.37-3 break almost every program (especially in a shell)

[Kai Wasserbäch]

OK, downgrading from the broken system state didn't work either and left 
me with a lot of segfaulting programs. In the end it seems that 2.73-3 
isn't really broken, but the update process is somehow. After I went to 
a rescue system and redid the update from there, everything worked out. 
Now 2.73-3 is working here as well. In the rescue system environment the 
post-install scripts ran successfully.

In case it matters: I made the initial update with aptitude in my 
graphical session (KDE on X11).