Ever since I've installed the Obi device, some times when people call my cell phone number (an actual T-Mobile cell phone number) it will also simultaneously call all the numbers associated to my Google Voice account, e.g. home. The first couple of times I thought they accidentally called my GV number, but it has happened so many times, to so many people I now believe what they are saying.
I am running Android ICS 4.0.3 on a Nexus S. Anyone else having this issue?