Comment 30 for bug 285746

The 'whitelist' is actually not created when the packages are unticked: however, Computer Janitor does remove the unticked state, so that a particular package only needs to be unticked once. This state is tracked in /var/lib/computer-janitor/state.dat.

The whitelist is files in /etc/computer-janitor.d, and those files need to be edited manually, for now.

Unfortunately, we didn't come up with a fix for apt/dpkg to fix this properly in jaunty. The basic problem is still that there is no reliable way to track what packages are really obsolete and what packages were not installed from repositories. Because there are a fair number of packages that get obsoleted from release to release, I am reluctant to disable this feature of Computer Janitor, despite all the false positives it generates.

That doesn't mean I'm ignoring the problem, just that it's not entirely easy for me to solve. If you think this part of CJ should be disabled for jaunty, could you start a discussion about it on the ubuntu-devel mailing list, to get more people pay attention this question?