iMac is very slow switching between users and opening and closing applications

Question

I would like for applications to open and close faster .  I ran EtreCheck and got the following.  Can anyone interpret this?Problem description:iMac is very slow switching between usersEtreCheck version: 2.2 (132)Report generated 7/3/15, 2:21 PMDownload EtreCheck from http://etresoft.com/etrecheckClick 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 (24-inch, Early 2009) (Verified)    iMac - model: iMac9,1    1 2.93 GHz Intel Core 2 Duo CPU: 2-core    4 GB RAM Upgradeable        BANK 0/DIMM0            2 GB DDR3 1067 MHz ok        BANK 1/DIMM0            2 GB DDR3 1067 MHz ok    Bluetooth: Old - Handoff/Airdrop2 not supported    Wireless:  en1: 802.11 a/b/g/nVideo Information: ℹ️    NVIDIA GeForce GT 120 - VRAM: 256 MB        iMac 1920 x 1200System Software: ℹ️    OS X 10.10.3 (14D136) - Time since boot: 5 days 5:5:19Disk Information: ℹ️    Hitachi HDT721064SLA360 disk0 : (640.14 GB)        EFI (disk0s1) &lt;not mounted&gt; : 210 MB         Recovery HD (disk0s3) &lt;not mounted&gt;  [Recovery]: 650 MB         Macintosh HD (disk1) / : 638.94 GB (478.86 GB free)            Encrypted AES-XTS Unlocked            Core Storage: disk0s2 639.28 GB Online    OPTIARC DVD RW AD-5670S  USB Information: ℹ️    Apple Inc. Keyboard Hub         Apple Inc. Apple Keyboard     Apple Inc. Built-in iSight     EPSON USB2.0 MFP(Hi-Speed)     Apple Inc. BRCM2046 Hub         Apple Inc. Bluetooth USB Host Controller     Microsoft Microsoft Wireless Optical Mouse® 1.0A     Apple Computer, Inc. IR Receiver Gatekeeper: ℹ️    Mac App Store and identified developersProblem System Launch Daemons: ℹ️    [failed]    com.apple.security.syspolicy.plistLaunch Agents: ℹ️    [loaded]    com.google.keystone.agent.plist [Click for support]Launch Daemons: ℹ️    [loaded]    com.adobe.fpsaud.plist [Click for support]    [loaded]    com.google.keystone.daemon.plist [Click for support]    [loaded]    com.skype.skypeinstaller.plist [Click for support]User Launch Agents: ℹ️    [failed]    com.apple.CSConfigDotMacCert-@me.com-SharedServices.Agent.plist    [failed]    com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plistUser Login Items: ℹ️    iTunesHelper    UNKNOWN Hidden (missing value)    Plaxo Assistant    UNKNOWN  (missing value)    Google Chrome    Application Hidden (/Applications/Google Chrome.app)    LOGINserver    Application  (/Library/Printers/Brother/Utilities/Server/LOGINserver.app)Internet Plug-ins: ℹ️    Flip4Mac WMV Plugin: Version: 3.3.1.3   - SDK 10.8 [Click for support]    FlashPlayer-10.6: Version: 18.0.0.194 - SDK 10.6 [Click for support]    Default Browser: Version: 600 - SDK 10.10    AdobePDFViewerNPAPI: Version: 11.0.11 - SDK 10.6 [Click for support]    AdobePDFViewer: Version: 11.0.11 - SDK 10.6 [Click for support]    Flash Player: Version: 18.0.0.194 - SDK 10.6 [Click for support]    QuickTime Plugin: Version: 7.7.3    Google Earth Web Plug-in: Version: 6.0 [Click for support]    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]    iPhotoPhotocast: Version: 7.0User internet Plug-ins: ℹ️    Google Earth Web Plug-in: Version: 7.1 [Click for support]3rd Party Preference Panes: ℹ️    Flash Player  [Click for support]    Flip4Mac WMV  [Click for support]Time Machine: ℹ️    Time Machine not configured!Top Processes by CPU: ℹ️        13%    mds        12%    mds_stores         8%    mdworker(8)         4%    WindowServer         2%    fontdTop Processes by Memory: ℹ️    504 MB    kernel_task    238 MB    softwareupdated    221 MB    Google Chrome Helper(3)    139 MB    mdworker(12)    119 MB    mds_storesVirtual Memory Information: ℹ️    146 MB    Free RAM     3.86 GB    Used RAM     15 MB    Swap Used

Carolyn Samit · Accepted Answer

The startup disk may need repairing.Launch Disk Utility located in HD &gt; Applications &gt; UtillitiesSelect the startup disk on the left then select the First Aid tab.Click:  Verify Disk (not Verify Disk Permissions)If Disk Utility reports errors, restart your Mac while holding down the Command + R keys.From there you should be able to access the built in utilities in OS X Recoveryto repair the startup disk and restore OS X.Make sure to back up all important files first before using OS X Recovery.If Disk Utillity reports that disk appears to be ok, a Safe Mode boot deletes some system caches that may help.Top left corner of your screen click the  Apple   &gt; Shut Down.After your Mac shuts down, wait 10 seconds, then press the power button.Immediately after you hear the startup tone, hold down the Shift key. You should press the Shift key as soon as possible after you hear the startup tone, but not before.Release the Shift key when you see the gray Apple logo and progress indicator.Once you are in Safe Mode, go back to the Apple  menu. From the drop down menu click:  RestartIf that doesn&#x27;t help, update to v10.0.4. Open the App Store then select Updates from the menu.