I tried it with a clean install of of latest Xubuntu LTS. 12.04.3. The same thing happened.
1) I instelled a comman line environment from the Xubuntu LTS.
2) Installed apt-build, aind installed xubuntu-desktop with "apt-build install xubuntu-desktop"
3) Restarted, logged in and updated the sources.
Affects LTS as well, and outside GUI
I tried it with a clean install of of latest Xubuntu LTS. 12.04.3. The same thing happened.
1) I instelled a comman line environment from the Xubuntu LTS.
2) Installed apt-build, aind installed xubuntu-desktop with "apt-build install xubuntu-desktop"
3) Restarted, logged in and updated the sources.