I'm currently running an up to date power manager and its icon is shown twice in the system tray. If I quit power manager, both disappear. If I re-run it, two appear again. And btw it takes a really long time to start since some rev. (I updated it once before the weekend and it worked fine, and once after the weekend and it shows this behavior, so it's a rev during the weekend)
It's a bug introduced on Saturday after a commit of some changes, i've seen the problem immediately after ( actually the power manager is started twice ), but unfortunately i lost access to the internet, so i wasn't able to fix it. in today's rev it's fixed. If you run the revision 5715 please let me know if you see this kind of problems, after this revision i don't expect major changes except for correct time approximation for a primary battery.
fixed in rev 5715 .