Un aiutino con rkhunter

Salve,
Ho eseguito rkhunter, tutto Ok tranne le ultime due linee, controllo il log e
trovo questo:
[17:00:50] Performing filesystem checks
[17:00:50] Info: Starting test name 'filesystem'
[17:00:51] Info: SCAN_MODE_DEV set to 'THOROUGH'
[17:00:51] Checking /dev for suspicious file types [ Warning ]