Computer Janitor shows outdated info after manual cleaning

[Bob Bib]

Computer Janitor (no matter if it's GUI 'computer-janitor' or CLI 'computer-janitor-gtk') shows outdated info after manual cleaning:
1) launch the Computer Janitor, let it show you the unneeded packages & configs;
2) close Computer Janitor, remove some unneeded items manually;
3) open the Computer Janitor again -- it still shows the items you just have removed manually (and there's no 'Update/Refresh' option).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: computer-janitor-gtk 2.1.0-0ubuntu8
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
Date: Sat Apr 14 19:13:58 2012
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: computer-janitor
UpgradeStatus: Upgraded to precise on 2012-03-31 (14 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Andrew Schulman (andrex)]

I confirm this bug:

$ computer-janitor find
removable file:/etc/php5/conf.d/apc.ini.dpkg-old

$ ls -l /etc/php5/conf.d/apc.ini.dpkg-old
ls: cannot access /etc/php5/conf.d/apc.ini.dpkg-old: No such file or directory

I removed the file manually, and computer-janitor thinks it's still there.