Buona sera,
ringrazio innanzitutto per la gentile risposta che "metterò senz'altro in pratica". Il portatile all'acquisto aveva Lion, ora Maverick aggiornato da App Store. La versione IOS è Software OS X 10.9.5 (13F34). Seguo i passi descritti e mi rifaccio viva. Ancora grazie mille
Silvia
- - - Updated - - -
EtreCheck version: 2.1.8 (121)
Report generated 23 febbraio 2015 22:54:41 CET
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information:

MacBook Pro (13-inch, Early 2011) (Technical Specifications)
MacBook Pro - model: MacBookPro8,1
1 2.7 GHz Intel Core i7 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Battery Health: Normal - Cycle count 97
Video Information:

Intel HD Graphics 3000 - VRAM: 384 MB
Color LCD 1280 x 800
System Software:

OS X 10.9.5 (13F34) - Time since boot: 0:13:22
Disk Information:

Hitachi HTS545050B9A302 disk0 : (500,11 GB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 499.25 GB (100.32 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R UJ-898
USB Information:

Apple Computer, Inc. IR Receiver
Apple Inc. FaceTime HD Camera (Built-in)
SanDisk Cruzer Pop 32,02 GB
xxxx (disk1s1) /Volumes/xxxx: 32.02 GB (22.51 GB free)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:

Apple Inc. thunderbolt_bus
Gatekeeper:

Anywhere
Kernel Extensions:

/System/Library/Extensions
[loaded] com.LaCie.ScsiType00 (1.2.8 - SDK 10.6) [Click for support]
[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.0) [Click for support]
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.0) [Click for support]
[not loaded] com.devguru.driver.SamsungComposite (1.4.25 - SDK 10.6) [Click for support]
[not loaded] com.jmicron.driver.jmPeripheralDevice (2.0.4) [Click for support]
[not loaded] com.lacie.driver.LaCie_RemoteComms (1.0.1) [Click for support]
[not loaded] com.oxsemi.driver.OxsemiDeviceType00 (1.28.2) [Click for support]
[not loaded] com.sony.driver.prs2 (1.0.3d1) [Click for support]
/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
[not loaded] com.devguru.driver.SamsungACMControl (1.4.25 - SDK 10.6) [Click for support]
[not loaded] com.devguru.driver.SamsungACMData (1.4.25 - SDK 10.6) [Click for support]
[not loaded] com.devguru.driver.SamsungMTP (1.4.25 - SDK 10.5) [Click for support]
[not loaded] com.devguru.driver.SamsungSerial (1.4.25 - SDK 10.6) [Click for support]
Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.adobe.CS5ServiceManager.plist [Click for support]
[loaded] com.intego.backupassistant.agent.plist [Click for support]
[loaded] com.lacie.eventsactions.launcher.agent.plist [Click for support]
[loaded] com.oracle.java.Java-Updater.plist [Click for support]
[not loaded] com.sony.ReaderDesktop.RunReaderDesktop.plist [Click for support]
[loaded] org.macosforge.xquartz.startx.plist [Click for support]
Launch Daemons:

[loaded] com.adobe.fpsaud.plist [Click for support]
[running] com.intego.BackupAssistant.daemon.plist [Click for support]
[running] com.lacie.desktopmanager.service.plist [Click for support]
[loaded] com.microsoft.office.licensing.helper.plist [Click for support]
[loaded] com.oracle.java.Helper-Tool.plist [Click for support]
[loaded] com.oracle.java.JavaUpdateHelper.plist [Click for support]
[running] com.sec.faxdb.plist [Click for support]
[loaded] org.macosforge.xquartz.privileged_startx.plist [Click for support]
User Launch Agents:

[loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.adobe.ARM.[...].plist [Click for support]
[loaded] com.facebook.videochat.[redacted].plist [Click for support]
[failed] com.google.GoogleContactSyncAgent.plist [Click for support]
[loaded] com.google.keystone.agent.plist [Click for support]
[not loaded] com.macpaw.CleanMyMac.helperTool.plist [Click for support]
[not loaded] com.macpaw.CleanMyMac.trashSizeWatcher.plist [Click for support]
[not loaded] com.macpaw.CleanMyMac.volumeWatcher.plist [Click for support]
[not loaded] com.wondershare.mobilegodaemon.plist [Click for support]
[not loaded] com.zeobit.MacKeeper.Helper.plist [Click for support]
User Login Items:

DaemonManager Applicazione (/Library/Printers/Samsung/Daemon/EPMDM/DaemonManager.app)
Internet Plug-ins:

FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
QuickTime Plugin: Version: 7.7.3
AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
Default Browser: Version: 537 - SDK 10.9
SharePointBrowserPlugin: Version: 14.1.3 - SDK 10.6 [Click for support]
Silverlight: Version: 5.1.20125.0 - SDK 10.6 [Click for support]
JavaAppletPlugin: Version: Java 7 Update 67 Check version
Safari Extensions:

AllPagesZoom
3rd Party Preference Panes:

Flash Player [Click for support]
Growl [Click for support]
handyPrint [Click for support]
Java [Click for support]
Time Machine:

Skip System Files: NO
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 499.25 GB Disk used: 398.93 GB
Destinations:
Salvataggi MacSY [Local]
Total size: 2.00 TB
Total number of backups: 9
Oldest backup: 2014-06-28 22:14:41 +0000
Last backup: 2015-02-15 20:38:05 +0000
Size of backup disk: Excellent
Backup size 2.00 TB > (Disk size 499.25 GB X 3)
Top Processes by CPU:

18% mds
7% WindowServer
1% fontd
0% AppleSpell
0% DaemonManager
Top Processes by Memory:

438 MB firefox
133 MB com.apple.IconServicesAgent
129 MB mds_stores
86 MB Finder
56 MB WindowServer
Virtual Memory Information:

1.06 GB Free RAM
1.60 GB Active RAM
518 MB Inactive RAM
1.12 GB Wired RAM
451 MB Page-ins
0 B Page-outs
Diagnostics Information:

Feb 23, 2015, 10:40:46 PM Self test - passed
Buona sera,
sono ancora Silvia. Ho fatto, credo, quello indicato e ora la soluzione è migliorata nei termini qui stopra riportati
Il mio Mac Book Pro è stato prodotto il 30-7-2011 n. 17756
Pensi possa essere una buona "risoluzione" della lentezza?! e/o comunque devo pensare di potenziare cmq RAM e cambiare il disco con SSD come mi hanno consigliato alla APPLE? vorrei lavorarci almeno con un porgramma di grafica come GIMP se non PHOTOSHOP...
Grazie davvero!
Silvia