It shows the false notification randomly (now). The last post above-I was able to get rid of that false note. I had shut off the phone, took out battery, waited a bit-replaced battery, turned on, still there.
Before doin that I had refreshed the system (where you check for updates). I wound up downloading an AV app just in case, all clear.
I checked the phone log as well as the msgs there is no new message. Anyone else have this and have a fix for this?