So, basically what the subject says. My 3GS is working pretty flawlessly with IOS4 so far, with one exception: If I receive and read an sms, or if I send one, and leave the phone sitting without leaving the sms app... ...I can come back to it minutes later and still find it glowing brightly at full power. If I hit the home button, it dims after 30 seconds as expected. Is it just me, or has anyone else seen this?