Hi,
Here is my EtreCheck report, hope it helps.
Also, does it matter if I get 2x2GB or 1x4GB, the only advantage to getting one 4gb is that ill have room left over for future, its cheaper too.
EtreCheck version: 2.1.8 (121)
Report generated 2 April 2015 09:53:49 BST
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: ℹ️
iMac (21.5-inch, Late 2009) (Technical Specifications)
iMac - model: iMac10,1
1 3.06 GHz Intel Core 2 Duo CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
Empty
BANK 1/DIMM0
Empty
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: ℹ️
NVIDIA GeForce 9400 - VRAM: 256 MB
iMac 1920 x 1080
System Software: ℹ️
OS X 10.10.2 (14C1514) - Time since boot: 0:3:18
Disk Information: ℹ️
ST3500418ASQ disk0 : (500.11 GB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 478.49 GB (362.95 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 20.76 GB (20.75 GB free)
HL-DT-ST DVDRW GA11N
USB Information: ℹ️
Western Digital Ext HDD 1021 1 TB
EFI (disk1s1) <not mounted> : 210 MB
Time Machine Backups (disk1s2) /Volumes/Time Machine Backups : 999.86 GB (353.82 GB free)
Apple Inc. Built-in iSight
Apple Internal Memory Card Reader
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
/System/Library/Extensions
[not loaded] com.flipvideo.IOUSBCameraMassStorage (1.0.1) [Click for support]
Startup Items: ℹ️
ChmodBPF: Path: /Library/StartupItems/ChmodBPF
Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
[failed] com.adobe.AdobeCreativeCloud.plist [Click for support] [Click for details]
[loaded] com.epson.Epusp.plist [Click for support]
[running] com.flipvideo.FlipShare.AutoRun.plist [Click for support]
[loaded] com.google.keystone.agent.plist [Click for support]
[loaded] com.oracle.java.Java-Updater.plist [Click for support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Click for support]
[running] com.cleverfiles.cfbackd.plist [Click for support]
[running] com.flipvideo.FlipShareServer.launchd.plist [Click for support]
[loaded] com.google.keystone.daemon.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2.Agent.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]
User Launch Agents: ℹ️
[loaded] com.facebook.videochat.[redacted].plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist [Click for support]
[loaded] com.yahoo.YahooContactSyncAgent.plist [Click for support]
User Login Items: ℹ️
None
Internet Plug-ins: ℹ️
o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
Google Earth Web Plug-in: Version: 6.1 [Click for support]
Default Browser: Version: 600 - SDK 10.10
AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Click for support]
FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
QuickTime Plugin: Version: 7.7.3
googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
NP_2020Player_IKEA: Version: 5.0.94.1 - SDK 10.6 [Click for support]
SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]
iPhotoPhotocast: Version: 7.0
JavaAppletPlugin: Version: Java 8 Update 40 Check version
User internet Plug-ins: ℹ️
BlueStacks Install Detector: Version: Unknown
Safari Extensions: ℹ️
Vidx
3rd Party Preference Panes: ℹ️
3ivx MPEG-4 [Click for support]
Flash Player [Click for support]
Java [Click for support]
Time Machine: ℹ️
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 478.49 GB Disk used: 115.54 GB
Destinations:
Time Machine Backups [Local]
Total size: 999.86 GB
Total number of backups: 155
Oldest backup: 2011-09-03 15:01:15 +0000
Last backup: 2015-04-01 16:57:01 +0000
Size of backup disk: Adequate
Backup size 999.86 GB > (Disk used 115.54 GB X 3)
Top Processes by CPU: ℹ️
5% WindowServer
1% mds
0% fontd
0% SystemUIServer
0% AppleSpell
Top Processes by Memory: ℹ️
133 MB com.apple.WebKit.WebContent
116 MB Safari
107 MB mds_stores
107 MB ocspd
99 MB Finder
Virtual Memory Information: ℹ️
1.37 GB Free RAM
1.63 GB Active RAM
470 MB Inactive RAM
555 MB Wired RAM
1.08 GB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Apr 2, 2015, 09:48:24 AM Self test - passed
Apr 1, 2015, 06:28:53 PM /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_201 5-04-01-182853_[redacted].crash
Apr 1, 2015, 05:37:13 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-04-01-173713_[redacted].c pu_resource.diag [Click for details]
Apr 1, 2015, 04:09:08 PM /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2015-04-01-160908 _[redacted].crash
Apr 1, 2015, 10:50:36 AM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-04-01-105036_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 07:03:59 PM /Library/Logs/DiagnosticReports/Microsoft Excel_2015-03-31-190359_[redacted].hang
Mar 31, 2015, 06:55:29 PM /Library/Logs/DiagnosticReports/Keynote_2015-03-31-185529_[redacted].hang
Mar 31, 2015, 05:36:26 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-173626_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 04:52:16 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-165216_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 03:52:33 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-155233_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 02:32:55 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-143255_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 01:44:10 PM /Library/Logs/DiagnosticReports/Microsoft Word_2015-03-31-134410_[redacted].cpu_resource.diag [Click for details]
Mar 31, 2015, 01:38:11 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-133811_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 01:11:11 PM /Library/Logs/DiagnosticReports/mdm_flash_player_2015-03-31-131111_[redacted].c pu_resource.diag [Click for details]
Mar 31, 2015, 05:51:36 PM /Library/Logs/DiagnosticReports/???_2015-03-31-175136_[redacted].cpu_resource.d iag [Click for details]