hello senter,
i have same "another application running " on my k800i, i thought for full flashing and gave my phone to phone repair shop. though i told them for full flash, when i got the phone back i saw everything was like new except the " bluetooth device list was still intact, means it had old entries , like before flashing" . so does it mean they have done only firmware update or reinstall.
coz i want to again give for full flash (main +fs+custom), i hope that this problem of another app running will be solved.