[xubuntu-users] Security update fails in 12.04

[Albert Wagner]

Updating Xubuntu 12.04.2. with security updates pushed by Ubuntu yielded 
the error notification below.  I don't have a clue how to fix this: "No 
space left on device".  I have checked space with GParted, Thunar and 
Disk Usage Analyzer and I have gBytes of unused space everywhere I can 
think to look.  The file linux-libc-dev 3.2.0-55.85 has a "!" in the S 
column of Synaptic.

Any help would be greatly appreciated.

installArchives() failed: (Reading database ... (Reading database ... 
5%% <more> (Reading database ... 100%% (Reading database ... 590564 
files and directories currently installed.)
Preparing to replace linux-libc-dev 3.2.0-55.85 (using 
.../linux-libc-dev_3.2.0-56.86_amd64.deb) ...
Unpacking replacement linux-libc-dev ...
dpkg: error processing 
/var/cache/apt/archives/linux-libc-dev_3.2.0-56.86_amd64.deb (--unpack):
  unable to create `/usr/include/linux/const.h.dpkg-new' (while 
processing `./usr/include/linux/const.h'): No space left on device
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
  /var/cache/apt/archives/linux-libc-dev_3.2.0-56.86_amd64.deb