Bug#645092: additional info.

[Cord Beermann]

DEBCONF_DEBUG=developer dpkg --configure --pending
Setting up grub-pc (1.98+20100804-14+squeeze1) ...
debconf (developer): frontend started
debconf (developer): frontend running, package name is grub-pc
debconf (developer): starting /var/lib/dpkg/info/grub-pc.config
configure 1.98+20100804-14
debconf (developer): <-- SET grub2/linux_cmdline console=tty0 
debconf (developer): --> 0 value set
debconf (developer): <-- console=ttyS0,115200n8
debconf (developer): <-- SET grub2/linux_cmdline_default 
debconf (developer): --> 0 value set
dpkg: error processing grub-pc (--configure):
 subprocess installed post-installation script returned error exit
status 128
Errors were encountered while processing:
 grub-pc