Check certificates, some app added its own certificate. I installed my own certificate on Android and it warns me about it each time after it boots. It's quite

Check certificates, some app added its own certificate. I installed my own certificate on Android and it warns me about it each time after it boots. It's quite annoying, because there doesn't seem to be a way to disable it (without modifying /system) and I trust my own certificate much more than any other the phone comes with.