The following NEW packages will be installed:
  courier-authlib 
The following packages will be upgraded:
  courier-authdaemon 
1 packages upgraded, 1 newly installed, 2 to remove and 57 not upgraded.
Need to get 0B/83.9kB of archives. After unpacking 14.0MB will be freed.
Do you want to continue? [Y/n/?] Y
Writing extended state information... Done
dpkg: error processing courier-authdaemon (--remove):
 Package is in a very bad inconsistent state - you should
 reinstall it before attempting a removal.
terminate called after throwing an instance of 'std::logic_error'
  what():  basic_string::_S_construct NULL not valid
Aborted
daniel@www:~$ Errors were encountered while processing:
 courier-authdaemon