root@yig:~# apt-get upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  libdw1 libunwind8
Use 'apt-get autoremove' to remove them.
The following packages have been kept back:
  icedtea-7-jre-jamvm kubuntu-desktop linux-generic linux-headers-generic
  linux-image-generic openjdk-7-jre openjdk-7-jre-headless
The following packages will be upgraded:
  libxerces-c3.1 pm-utils
The following packages will be DOWNGRADED:
  dkms
2 upgraded, 0 newly installed, 1 downgraded, 0 to remove and 7 not upgraded.
Need to get 936 kB of archives.
After this operation, 4,096 B of additional disk space will be used.
Do you want to continue? [Y/n] ^C