Due to 5 reports within 18 hours, this appears to be an issue that can be confirmed.
Relevant extract from an english dpkg log:
Setting up squid (2.7.STABLE7-1ubuntu12.1) ...
restart: Job failed to restart
dpkg: error processing squid (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up xkb-data (1.8-1ubuntu8.1~10.04.1) ...
Due to 5 reports within 18 hours, this appears to be an issue that can be confirmed.
Relevant extract from an english dpkg log: 1ubuntu12. 1) ... 1~10.04. 1) ...
Setting up squid (2.7.STABLE7-
restart: Job failed to restart
dpkg: error processing squid (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up xkb-data (1.8-1ubuntu8.