"Since you last logged in" list of users contains duplicates

In the Page Information view, there is a section called Recent Changes. There I see:

Since you last logged in:
sunmink, dlg, dlg, sunmink, dlg, Barton808, Barton808, Barton808, sunmink, JamesCMcPherson, sunmink, sunmink, sunmink, sunmink, sunmink, sunmink made 16 changes. (view)

(a screen shot is also attached)

As you can see only four users edited the page: dlg, Baron808, JamesCMcPherson and sunmink

It would be better if the list contained only these four users, ordered by the time of their last edit. So Something like this:

Since you last logged in:
dlg, JamesCMcPherson, sunmink made 16 changes. (view)