Strange "bloop" sound
Today my MBP early 2011 (with Lion) started reproduce a strange "bloop" sound, like the sound of an air bubble rising when you blow down in a straw 😮
This sound occurs even if sound is mute.
Even with no Safari pages opened this sound occurred ( you can see safari processes in the list below but it happened even with this application closed and no plug-ins running).
No active application on my Dock.
I have no disk space problems or memory problems, i have 350+ GB free on HD and 2+GB free RAM.
My MBP is completely cold, no problems about warming or processes CPU-intensive.
I tried to kill some user processes and tried to reboot my MBP but this still happens.
This sound "randomly" play every of 4-5 minutes.
This is what i have in Activity Monitor:
IDP Nome processo Utente CPU Mem. reale Mem. virtuale
0 kernel_task root 3,3 527,3 MB 5,01 GB
1 launchd root 0,0 2,2 MB 2,40 GB
10 kextd root 0,0 5,6 MB 2,38 GB
11 UserEventAgent root 0,0 7,1 MB 2,42 GB
12 notifyd root 0,0 1,3 MB 2,35 GB
13 fseventsd root 0,4 3,9 MB 2,40 GB
14 diskarbitrationd root 0,0 1,9 MB 2,39 GB
16 ntpd root 0,0 1,4 MB 2,32 GB
18 warmd nobody 0,0 3,0 MB 2,39 GB
21 special_file_handler root 0,3 1,9 MB 2,37 GB
22 syslogd root 0,0 1,0 MB 2,40 GB
24 stackshot root 0,0 1,3 MB 2,37 GB
25 securityd root 0,0 7,4 MB 2,41 GB
27 revisiond root 0,3 2,7 MB 2,39 GB
28 powerd root 0,0 2,6 MB 2,41 GB
31 opendirectoryd root 0,0 11,5 MB 2,41 GB
33 mtmfs root 0,0 6,0 MB 2,42 GB
34 mtmd root 7,1 5,5 MB 2,41 GB
35 mds root 5,9 65,1 MB 2,76 GB
36 mDNSResponder _mdnsrespo 0,0 3,4 MB 2,40 GB
38 loginwindow francesco 0,0 19,4 MB 2,46 GB
40 KernelEventAgent root 0,0 1,1 MB 2,35 GB
41 InternetSharing root 0,0 2,7 MB 2,40 GB
43 hidd root 0,0 2,0 MB 2,38 GB
45 dynamic_pager root 0,0 772 KB 2,32 GB
49 configd root 0,0 5,0 MB 2,42 GB
52 autofsd root 0,0 2,0 MB 2,38 GB
53 applepushserviced root 0,0 7,3 MB 2,41 GB
54 sh root 0,0 968 KB 2,32 GB
55 distnoted root 0,0 2,0 MB 2,39 GB
56 coreservicesd root 0,0 22,9 MB 2,43 GB
81 netbiosd _netbios 0,0 2,6 MB 2,40 GB
131 WindowServer _windowser 5,0 49,6 MB 3,10 GB
191 prl_naptd root 0,0 7,9 MB 2,41 GB
203 prl_disp_service root 0,1 20,4 MB 2,46 GB
207 CVMServer root 0,0 1,1 MB 2,33 GB
225 logind root 0,0 1,8 MB 2,37 GB
236 launchd francesco 0,0 1,6 MB 2,40 GB
249 UserEventAgent francesco 0,0 10,7 MB 2,41 GB
254 pboard francesco 0,0 1.020 KB 2,32 GB
257 Dock francesco 0,0 22,7 MB 2,44 GB
258 SystemUIServer francesco 2,0 31,8 MB 2,52 GB
259 Finder francesco 0,1 18,7 MB 2,46 GB
263 fontd francesco 0,0 5,3 MB 2,42 GB
269 com.apple.dock.extra francesco 0,0 11,4 MB 2,44 GB
271 warmd_agent francesco 0,0 1,8 MB 2,36 GB
278 imagent francesco 0,0 8,2 MB 2,41 GB
283 AirPort Base Station Agen francesco 0,0 2,0 MB 2,37 GB
308 launchd _spotlight 0,0 880 KB 2,36 GB
310 mdworker _spotlight 0,0 17,7 MB 2,42 GB
311 distnoted _spotlight 0,0 1,4 MB 2,37 GB
314 mdworker francesco 0,0 15,4 MB 2,42 GB
318 filecoordinationd root 0,0 2,0 MB 2,38 GB
320 cookied francesco 0,0 3,6 MB 2,39 GB
335 CVMCompiler francesco 0,0 2,1 MB 590,3 MB
438 coreaudiod _coreaudio 0,0 4,9 MB 2,40 GB
442 AppleSpell.service francesco 0,0 4,0 MB 2,40 GB
456 backupd root 36,7 66,0 MB 2,46 GB
457 mdwrite francesco 0,0 3,7 MB 2,41 GB
460 Monitoraggio Attività francesco 11,1 38,5 MB 2,52 GB
464 activitymonitord root 0,5 1,3 MB 2,33 GB
467 distnoted francesco 0,0 1,8 MB 2,39 GB
469 ubd francesco 0,0 13,9 MB 2,40 GB
471 ocspd root 0,0 3,2 MB 2,37 GB
487 Safari francesco 0,0 64,1 MB 3,56 GB
489 Safari Contenuto web francesco 0,8 117,4 MB 3,56 GB
507 usbmuxd _usbmuxd 0,0 2,5 MB 2,37 GB
510 xpchelper francesco 0,0 4,8 MB 2,36 GB
520 Flash Player (Safari plug francesco 0,8 20,2 MB 750,0 MB
525 cupsd root 0,0 3,2 MB 2,36 GB
526 mdworker francesco 3,8 23,8 MB 2,42 GB
527 CVMCompiler francesco 0,0 15,2 MB 2,34 GB
Any suggestion?
Regards
MacBook Pro, Mac OS X (10.7.2)