By the way, during this time i reinstalled ML, deactivated iCloud but nothing has changed.
I backed my data up and tried to do what you said. First of all, you said 'when you notice the problem' but even i don't work something, ML seems slow. Boot time is about 1 minute, when you open a file icons seems blank at first etc. etc.
I looked up to activitiy monitor without starting any program. Here is the top 5 programs:
Windows server 7.7 (what does windows server do on my computer ? Because of I use office:mac ?)
Activity monitor
Kernel task
activitymonitord
Safari Web Content
User 0.7%, system 0.7%, idle 0.98%
System memory page outs:0 swap used:0
Disk activity: reads in: 56652, writes out 20230
Here is log files. Since I reinstalled it there is less than 50
9/18/12 9:19:17.917 AM sandboxd[314]: ([302]) WebProcess(302) deny mach-lookup ATS Query Port 243
9/18/12 9:19:17.927 AM sandboxd[314]: ([302]) WebProcess(302) deny mach-lookup ATS Query Port 243
9/18/12 9:19:17.939 AM sandboxd[314]: ([302]) WebProcess(302) deny mach-lookup ATS Query Port 243
9/18/12 9:19:17.972 AM sandboxd[314]: ([302]) WebProcess(302) deny mach-lookup ATS Query Port 243
9/18/12 9:19:17.990 AM sandboxd[314]: ([302]) WebProcess(302) deny mach-lookup ATS Query Port 243
9/18/12 9:19:50.565 AM com.apple.usbmuxd[21]: _handle_timer heartbeat detected detach for device 0x1-192.168.1.16:0!
9/18/12 9:20:14.047 AM com.apple.usbmuxd[21]: _SendDetachNotification (thread 0x7fff795ed180): sending detach for device 50:ea:d6:f0:80:f8@fe80::52ea:d6ff:fef0:80f8._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
9/18/12 9:20:52.000 AM kernel[0]: considerRebuildOfPrelinkedKernel com.apple.kext.triggers triggered rebuild
9/18/12 9:21:54.127 AM PluginProcess[336]: ApplePersistence=YES
9/18/12 9:23:38.157 AM CVMServer[132]: Check-in to the service com.apple.cvmsCompAgent_x86_64 failed. This is likely because you have either unloaded the job or the MachService has the ResetAtClose attribute specified in the launchd.plist. If present, this attribute should be removed.
9/18/12 9:23:38.170 AM launchctl[347]: launchctl: Dubious permissions on file (skipping): /Library/LaunchAgents/com.adobe.AAM.Updater-1.0.plist
9/18/12 9:23:38.715 AM CVMServer[132]: Check-in to the service com.apple.cvmsCompAgent_x86_64 failed. This is likely because you have either unloaded the job or the MachService has the ResetAtClose attribute specified in the launchd.plist. If present, this attribute should be removed.
9/18/12 9:23:58.334 AM com.apple.usbmuxd[21]: _SendAttachNotification (thread 0x7fff795ed180): sending attach for device 50:ea:d6:f0:80:f8@fe80::52ea:d6ff:fef0:80f8._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
9/18/12 9:23:58.579 AM usbmuxd[21]: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
9/18/12 9:24:12.749 AM PluginProcess[350]: ApplePersistence=YES
9/18/12 9:25:26.269 AM com.apple.usbmuxd[21]: _SendDetachNotification (thread 0x7fff795ed180): sending detach for device 50:ea:d6:f0:80:f8@fe80::52ea:d6ff:fef0:80f8._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
9/18/12 9:25:46.707 AM Activity Monitor[351]: ApplePersistence=YES
9/18/12 9:29:25.176 AM com.apple.kextcache[335]: Kernel file /mach_kernel does not contain requested arch: i386
9/18/12 9:29:41.629 AM com.apple.kextcache[335]: Created prelinked kernel /System/Library/Caches/com.apple.kext.caches/Startup/kernelcache.
9/18/12 9:38:58.392 AM Console[361]: ApplePersistence=YES
I hope these help. Thanks