Many thanks for the suggestion.
Please see the results below:
Problem description:
Computer runs very slowly sometimes. Apps quite often have to force quit
EtreCheck version: 2.1.5 (108)
Report generated 31 Dec 2014 12:53:13 GMT
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
MacBook Pro (15-inch, Late 2008) (Verified)
MacBook Pro - model: MacBookPro5,1
1 2.8 GHz Intel Core 2 Duo CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1067 MHz ok
BANK 0/DIMM1
2 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce 9400M - VRAM: 256 MB
Color LCD 1440 x 900
NVIDIA GeForce 9600M GT - VRAM: 512 MB
System Software: ℹ️
OS X 10.9.5 (13F34) - Uptime: 1:54:18
Disk Information: ℹ️
WDC WD7500BPKX-00HPJT0 disk0 : (750.16 GB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 749.30 GB (401.56 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GS21N
USB Information: ℹ️
Apple Inc. Built-in iSight
Apple, Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/Library/Application Support/VirtualBox
[loaded] org.virtualbox.kext.VBoxDrv (4.3.16) [Support]
[loaded] org.virtualbox.kext.VBoxNetAdp (4.3.16) [Support]
[loaded] org.virtualbox.kext.VBoxNetFlt (4.3.16) [Support]
[loaded] org.virtualbox.kext.VBoxUSB (4.3.16) [Support]
/Library/Extensions
[loaded] at.obdev.nke.LittleSnitch (4228 - SDK 10.8) [Support]
/System/Library/Extensions
[loaded] com.Cycling74.driver.Soundflower (1.5.1) [Support]
[not loaded] com.FTDI.driver.FTDIUSBSerialDriver (2.2.16) [Support]
[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.13) [Support]
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.13) [Support]
[not loaded] com.eltima.ElmediaPlayer.kext (1.0) [Support]
[not loaded] com.eltima.SyncMate.kext (0.2.4b13) [Support]
[not loaded] com.novatelwireless.kext.wwan (3.0.23) [Support]
[not loaded] com.sierrawireless.driver.SierraDIPSupport (1.0.0) [Support]
[not loaded] com.sierrawireless.driver.SierraFSRSupport (3.0.0) [Support]
[not loaded] com.sierrawireless.driver.SierraHSRSupport (3.0.0) [Support]
[not loaded] com.sierrawireless.driver.SierraIPDirect (1.1.4) [Support]
/System/Library/Extensions/NovatelWirelessWWAN.kext/Contents/PlugIns
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.23) [Support]
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.23) [Support]
[not loaded] com.novatelwireless.driver.3G (3.0.23) [Support]
[not loaded] com.novatelwireless.driver.3GData (3.0.23) [Support]
[not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.23) [Support]
[not loaded] com.novatelwireless.driver.NWVBE (3.0.23) [Support]
Launch Agents: ℹ️
[running] at.obdev.LittleSnitchUIAgent.plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[loaded] com.oracle.java.Java-Updater.plist [Support]
[invalid?] SwapperUFi.plist [Support]
Launch Daemons: ℹ️
[running] at.obdev.littlesnitchd.plist [Support]
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.google.keystone.daemon.plist [Support]
[loaded] com.oracle.java.Helper-Tool.plist [Support]
[loaded] com.oracle.java.JavaUpdateHelper.plist [Support]
[loaded] com.rogueamoeba.instanton-agent.plist [Support]
[not loaded] org.virtualbox.startup.plist [Support]
[invalid?] PPPMonitord.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
[running] com.vladalexa.MagicPrefs.plist [Support]
[not loaded] org.virtualbox.vboxwebsrv.plist [Support]
User Login Items: ℹ️
Stickies Application (/Applications/Stickies.app)
Rogue Amoeba Schedule Helper Application (/Library/Application Support/Audio Hijack Pro/Rogue Amoeba Schedule Helper.app)
TextExpander Application (/Applications/TextExpander.app)
SIMBL Agent Application (/Library/ScriptingAdditions/SIMBL.osax/Contents/Resources/SIMBL Agent.app)
Dropbox Application (/Applications/Dropbox.app)
DVDAuthorizeHelper Application (/Users/[redacted]/Library/Application Support/Helper/DVDAuthorizeHelper.app)
RealPlayer Downloader Agent Application (/Users/[redacted]/Library/Application Support/RealNetworks/RealPlayer Downloader Agent.app)
SpeechSynthesisServer Application (/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks /SpeechSynthesis.framework/Versions/A/SpeechSynthesisServer.app)
EvernoteHelper Application (/Applications/Evernote.app/Contents/Library/LoginItems/EvernoteHelper.app)
Internet Plug-ins: ℹ️
DirectorShockwave: Version: 12.0.9r149 - SDK 10.6 [Support]
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
Default Browser: Version: 537 - SDK 10.9
Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 [Support]
Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Support]
FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
AmazonMP3DownloaderPlugin101749: Version: AmazonMP3DownloaderPlugin 1.0.17 - SDK 10.4 [Support]
Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.7.3
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5 [Support]
JavaAppletPlugin: Version: Java 7 Update 71 Check version
User internet Plug-ins: ℹ️
EMusic: Version: EMusic 1.0.0 [Support]
RealPlayer Plugin: Version: Unknown [Support]
3rd Party Preference Panes: ℹ️
CepstralVoices [Support]
Flash Player [Support]
Flip4Mac WMV [Support]
Java [Support]
MagicPrefs [Support]
Time Machine: ℹ️
Skip System Files: NO
Mobile backups: OFF
Auto backup: NO - Auto backup turned off
Destinations:
PQB Time Machine back up [Local]
Total size: 0 B
Total number of backups: 8
Oldest backup: 2012-04-07 20:41:49 +0000
Last backup: 2012-04-15 15:23:33 +0000
Size of backup disk: Excellent
Backup size 0 B > (Disk size 0 B X 3)
Top Processes by CPU: ℹ️
6% WindowServer
3% mds
1% fontd
1% RealPlayer Downloader Agent
0% firefox
Top Processes by Memory: ℹ️
442 MB firefox
245 MB com.apple.IconServicesAgent
150 MB Finder
120 MB Google Chrome
107 MB WindowServer
Virtual Memory Information: ℹ️
211 MB Free RAM
1.30 GB Active RAM
1.86 GB Inactive RAM
660 MB Wired RAM
1.95 GB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Dec 31, 2014, 11:00:44 AM /Library/Logs/DiagnosticReports/UserEventAgent_2014-12-31-110044_[redacted].cra sh
Dec 31, 2014, 10:59:31 AM Self test - passed