Thanks macjack, please find the report below. As you can see it has a couple of red markers, hope you can make more sense of it than I can. I should also point out that the problem with freezes and a very laggy Safari only started happening after I upgraded from OSX10.6 last year. Was happy with the system and waited as long as I could prior to leaving what to me was the most stable system since OS9. Thought that Yosemite would have fixed that but it made no difference.
EtreCheck version: 2.6.6 (226)
Report generated 2016-01-04, 10:48 PM
Runtime 6:07
Download EtreCheck from http://etrecheck.com
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: (What does this mean?)
iMac (27-inch, Late 2009)
[Click for Technical Specifications]
[Click for User Guide]
iMac - model: iMac11,1
1 2.66 GHz Intel Core i5 CPU: 4-core
8 GB RAM Upgradeable
[Click for upgrade instructions]
BANK 0/DIMM0
2 GB DDR3 1067 MHz ok
BANK 1/DIMM0
2 GB DDR3 1067 MHz ok
BANK 0/DIMM1
2 GB DDR3 1067 MHz ok
BANK 1/DIMM1
2 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: (What does this mean?)
ATI Radeon HD 4850 - VRAM: 512 MB
iMac 2560 x 1440
System Software: (What does this mean?)
OS X Yosemite 10.10.5 (14F1509) - Time since boot: about 9 hours
Disk Information: (What does this mean?)
ST31000528AS disk0 : (1 TB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Internal (disk0s2) / : 778.48 GB (18.29 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 220.86 GB (93.65 GB free)
OPTIARC DVD RW AD-5680H ()
USB Information: (What does this mean?)
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Internal Memory Card Reader 31.16 GB
PANASONIC (disk1s1) /Volumes/PANASONIC : 31.16 GB (15.20 GB free)
Apple, Inc. Keyboard Hub
Apple, Inc Apple Keyboard
Apple Inc. Built-in iSight
Apple Computer, Inc. IR Receiver
Firewire Information: (What does this mean?)
WD My Book 1112 800mbit - 800mbit max
EFI (disk3s1) <not mounted> : 210 MB
WD (disk3s2) /Volumes/WD : 999.16 GB (7.14 GB free)
disk2s0 (disk2s0) <not mounted> : 700 MB
disk2s0s1 (disk2s0s1) <not mounted> : 32 KB
disk2s0s2 (disk2s0s2) <not mounted> : 237 MB
Configuration files: (What does this mean?)
/etc/hosts - Count: 6
Gatekeeper: (What does this mean?)
Mac App Store
Kernel Extensions: (What does this mean?)
/Library/Extensions
[loaded] at.obdev.nke.LittleSnitch (4216 - SDK 10.8) [Click for support]
[loaded] com.metakine.handsoff.driver (2.3.3 - SDK 10.6) [Click for support]
[loaded] com.squirrels.driver.AirParrotSpeakers (1.8 - SDK 10.8) [Click for support]
/System/Library/Extensions
[loaded] com.squirrels.airparrot.framebuffer (3 - SDK 10.8) [Click for support]
[not loaded] com.wibu.codemeter.CmUSBMassStorage (1.0.7) [Click for support]
~/Apps User/Utilities user/TemperatureMonitor.app
[not loaded] com.bresink.driver.BRESINKx86Monitoring (9.0) [Click for support]
/Volumes/WD/Applications/Utilities/TechTool Pro 7.app
[not loaded] com.micromat.driver.spdKernel (1 - SDK 10.8) [Click for support]
/Volumes/WD/Users/[redacted]/Apps User/Utilities user/DiskWarrior.app
[not loaded] com.alsoft.Preview (4.3) [Click for support]
/Volumes/WD/Users/[redacted]/Apps User/Utilities user/Toast 9 Titanium/Toast 9.app
[not loaded] com.elgato.driver.Pluto2 (1.1) [Click for support]
[not loaded] com.roxio.BluRaySupport (1.1.6) [Click for support]
[not loaded] com.roxio.TDIXController (1.7) [Click for support]
/Volumes/WD/Users/[redacted]/Library/Application Support/Plex/Plex Media Server.app
[not loaded] com.Cycling74.driver.Soundflower (1.5.1) [Click for support]
Startup Items: (What does this mean?)
WkSvMacX: Path: /Library/StartupItems/WkSvMacX
Startup items are obsolete in OS X Yosemite
System Launch Daemons: (What does this mean?)
[running] com.wibu.CodeMeter.Server.plist [Click for support]
Launch Agents: (What does this mean?)
[running] at.obdev.LittleSnitchUIAgent.plist [Click for support]
[loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.adobe.CS4ServiceManager.plist [Click for support]
[loaded] com.google.keystone.agent.plist [Click for support]
[running] com.metakine.handsoff.agent.plist [Click for support]
[loaded] com.oracle.java.Java-Updater.plist [Click for support]
Launch Daemons: (What does this mean?)
[running] at.obdev.littlesnitchd.plist [Click for support]
[loaded] com.adobe.SwitchBoard.plist [Click for support]
[loaded] com.adobe.fpsaud.plist [Click for support]
[loaded] com.bombich.ccc.plist [Click for support]
[loaded] com.google.keystone.daemon.plist [Click for support]
[running] com.metakine.handsoff.daemon.plist [Click for support]
[loaded] com.oracle.java.Helper-Tool.plist [Click for support]
User Launch Agents: (What does this mean?)
[loaded] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist - /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewo rk/Versions/A/Support/CSConfigDotMacCert: Executable not found!
User Login Items: (What does this mean?)
X-Assist Application (~/Apps User/Utilities user/X-Assist/X-Assist.app)
Hands Off! Application (/Applications/Utilities Joolz/Hands Off!.app)
DragThing Application (~/Apps User/Utilities user/DragThing.app)
Other Apps: (What does this mean?)
[running] com.apple.xpc.launchd.oneshot.0x10000003.Hands Off!
[running] com.apple.xpc.launchd.oneshot.0x10000004.DragThing
[running] com.apple.xpc.launchd.oneshot.0x1000000a.EtreCheck
[loaded] com.lsreset
[loaded] com.metakine.handsoff.64500
[running] com.ortabe.xassist.79552
[loaded] uk.co.tla-systems.dragthing.75008
Internet Plug-ins: (What does this mean?)
SurveillanceClient: Version: 3.10.22 - SDK 10.7 [Click for support]
Google Earth Web Plug-in: Version: 7.1 [Click for support]
Default Browser: Version: 600 - SDK 10.10
Unity Web Player: Version: UnityPlayer version 4.5.3f3 - SDK 10.6 [Click for support]
AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 [Click for support]
FlashPlayer-10.6: Version: 20.0.0.267 - SDK 10.6 [Click for support]
AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
Silverlight: Version: 5.1.40728.0 - SDK 10.6 [Click for support]
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 20.0.0.267 - SDK 10.6 [Click for support]
iPhotoPhotocast: Version: 7.0 - SDK 10.7
AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
GarminGpsControl: Version: 4.0.2.6 Beta - SDK 10.6 [Click for support]
JavaAppletPlugin: Version: Java 7 Update 13 Check version
Safari Extensions: (What does this mean?)
Adblock Plus
ClickToFlash
3rd Party Preference Panes: (What does this mean?)
Application Enhancer [Click for support]
Flash Player [Click for support]
Java [Click for support]
MacFUSE [Click for support]
Perian [Click for support]
Tuxera NTFS [Click for support]
WindowShade X [Click for support]
Wired [Click for support]
Time Machine: (What does this mean?)
Auto backup: NO - Auto backup turned off
Volumes being backed up:
Internal: Disk size: 778.48 GB Disk used: 760.19 GB
Destinations:
Untitled [Local]
Total size: 0 B
Total number of backups: 0
Oldest backup: -
Last backup: -
Size of backup disk: Too small
Backup size 0 B < (Disk used 760.19 GB X 3)
Top Processes by CPU: (What does this mean?)
4% WindowServer
2% fontd
0% kernel_task
0% DragThing
0% askpermissiond
Top Processes by Memory: (What does this mean?)
1.70 GB com.apple.WebKit.WebContent(7)
807 MB kernel_task
467 MB softwareupdated
352 MB Safari
205 MB mds_stores
Virtual Memory Information: (What does this mean?)
1.20 GB Free RAM
6.80 GB Used RAM (2.41 GB Cached)
0 B Swap Used
Diagnostics Information: (What does this mean?)
Jan 4, 2016, 10:46:29 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224629_[redacted].crash
Jan 4, 2016, 10:46:18 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224618_[redacted].crash
Jan 4, 2016, 10:46:08 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224608_[redacted].crash
Jan 4, 2016, 10:45:57 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224557_[redacted].crash
Jan 4, 2016, 10:45:47 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224547_[redacted].crash
Jan 4, 2016, 10:45:36 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224536_[redacted].crash
Jan 4, 2016, 10:45:26 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224526_[redacted].crash
Jan 4, 2016, 10:45:15 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224515_[redacted].crash
Jan 4, 2016, 10:45:06 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224506_[redacted].crash
Jan 4, 2016, 10:44:55 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224455_[redacted].crash
Jan 4, 2016, 10:44:46 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224446_[redacted].crash
Jan 4, 2016, 10:44:40 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224440_[redacted].crash
Jan 4, 2016, 10:44:23 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224423_[redacted].crash
Jan 4, 2016, 10:44:12 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224412_[redacted].crash
Jan 4, 2016, 10:44:02 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224402_[redacted].crash
Jan 4, 2016, 10:43:51 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224351_[redacted].crash
Jan 4, 2016, 10:43:41 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224341_[redacted].crash
Jan 4, 2016, 10:43:31 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224331_[redacted].crash
Jan 4, 2016, 10:43:21 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224321_[redacted].crash
Jan 4, 2016, 10:43:11 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-01-04-224311_[redacted].crash
Jan 4, 2016, 08:46:45 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204645_[redacted].crash
Jan 4, 2016, 08:46:34 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204634_[redacted].crash
Jan 4, 2016, 08:46:23 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204623_[redacted].crash
Jan 4, 2016, 08:46:13 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204613_[redacted].crash
Jan 4, 2016, 08:46:02 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204602_[redacted].crash
Jan 4, 2016, 08:45:51 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204551_[redacted].crash
Jan 4, 2016, 08:45:41 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204541_[redacted].crash
Jan 4, 2016, 08:45:30 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204530_[redacted].crash
Jan 4, 2016, 08:45:19 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204519_[redacted].crash
Jan 4, 2016, 08:45:09 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204509_[redacted].crash
Jan 4, 2016, 08:44:58 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204458_[redacted].crash
Jan 4, 2016, 08:44:48 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204448_[redacted].crash
Jan 4, 2016, 08:44:37 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204437_[redacted].crash
Jan 4, 2016, 08:44:27 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204427_[redacted].crash
Jan 4, 2016, 08:44:16 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204416_[redacted].crash
Jan 4, 2016, 08:44:05 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204405_[redacted].crash
Jan 4, 2016, 08:43:55 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204355_[redacted].crash
Jan 4, 2016, 08:43:44 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204344_[redacted].crash
Jan 4, 2016, 08:43:34 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204334_[redacted].crash
Jan 4, 2016, 08:43:23 PM /Library/Logs/DiagnosticReports/mdworker_2016-01-04-204323_[redacted].crash
Jan 4, 2016, 01:38:02 PM Self test - passed
Jan 4, 2016, 11:19:29 AM /Library/Logs/DiagnosticReports/The Unarchiver_2016-01-04-111929_[redacted].cpu_resource.diag [Click for details]