So that happens for the Pi coin qt only? Just asked because when I ran two other qt wallets prior to PiCoin, I didn't get any such notification but did only for the PiCoin qt... Although it's running now, the memory of that error message still lingers. Anyway, after running it the first time, someone tried to hack one of my google accounts. It could just be a coincidence though. Hope that event had nothing to do with running the PiCoin qt.
Yes, I had this message also til now only with PiCoin wallet. I do not think that the hacking attempt was related to the PiWallet, google accounts get attacked quite often, thus was probably only a coincidence. To be on the safe side, just set a new password for your google account which is much stronger and secure as the one you are using currently.