»» Debian Tutorials - Upgrade Squeeze to Wheezy Part 1 ««
This video tutorial was meant to show the error message when running
"apt-get dist-upgrade"
if you get an error that says
" E: Could not perform immediate configuration on 'default-jre'.
Please see man 5 apt.conf under APT::Immediate-Configure
for details. (2) "
Simply purge all instances of openoffice.
"sudo apt-get purge openoffice.org"
RE run apt-get dist-upgrade again and you should be ok.