After using gnome-packagekit-installer to add or remove a program, the Software Log Viewer shows two identical entries for a single action. For example, if the user removed cups-pdf, Software Log Viewer would show two lines which each read:
"[Date] | Removed Packages | Removed: cups-pdf | [User name] | [Application]"
We moved the upstream bugtracker to GitHub a long time ago. If this issue still affects you please re-create the issue here: https://github.com/hughsie/PackageKit/issues
Sorry for the impersonal message, and fingers crossed your issue no longer happens. Thanks.