I think both those issues are due to the google voice app, it really sucks in my opinion... i've had both of those happen.Well no more duplicate messages for me as of the last few days at least, im not sure about the other poster but I do use google voice. My current issue with the ROM is the constant voicemail notification, sometimes I will have two ( one which can be swiped away) the other is just constant and seems to be no way of removing. Also I have checked and have no new pending voicmails.
---------- Post added at 03:28 PM ---------- Previous post was at 03:08 PM ----------
Scratch that duplicates flooding in as I type gonna search how to do a log
try clearing data for google voice app and setting it up again.