Upgrade of libpango-1.0-0 (1.44.7-5 –> 1.46.0-1) is supposed to crash sylpheed at startup.
Watch out, if sylpheed is your email client!
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968372
libpango-1.0-0 has been upgraded to version 1.46.0-2
The bug seems to be fixed.
On my system sylpheed is working fine.