Hi, I'm the author msn-pecan, and I just found the issue of the latest problems draining the battery.

Apparently, there was a date parsing bug regarding daylight savings mode... if you happen to be in DST, and you happen to receive an offline message, there will be a loop constantly trying to get an authorization.

I just pushed a fix to extras-testing (0.1.0-0maemo3). Please give a try