A weird one: RTM on my HTC

Earlier this week I noticed that the battery on my HTC One S drained really fast.
I check some settings and stats and found that the Remember the Milk app (RTM) seems to be the culprit.

1. GPS was on all the time (seen in power > history)
   even though I explicitly turned it off... it stayed on
2. the RTM app used more than one third of the power
   (and location alerts were disabled... so there should not have been any link to the GPS thingy above)
3. however, RTM was using GPS all the time, as can be seen in the details.

That was weird.

And I could not make this go away.

I was pretty sure that during the previous days, I rebooted the phone (just because for lack of power...)

So I posted a question to the RTM support forum and disabled the app for the time being.

You have to re-read the last half sentence to fully understand how this was bothering me:
I - totally dependent on RTM - disabled the app on my phone. Imagine that.

The RTM folks responded, I described the problem in more detail, and got the tip/request to 

1. uninstall RTM app (not simply disable)
2. reboot the phone
3. re-install RTM app from the play store.

I did as requested, and voilà the problem was gone.

RTM does not even show up any longer in the power statistic. (So nowhere near 34%).

And GPS is really only on when I need it (see history).

Should have thought of this myself: I mean, I'm in the business too long not to consider re-boot and re-install :)

Big thanks to the RTM team for their fast help