Q: Why does my iMac 12  27" running OS 10.12.0 and the previous version stop during startup with a spinning ball during log in, but only after I logged out earlier.  It never has the problem if I had Shutdown earlier instead of logging out.  No key on t

I have sent two reports.  First on 10/16 and another today 10/17.

I hope I have done it correctly.

EtreCheck version: 3.0.6 (315)

Report generated 2016-10-17 13:24:30

Download EtreCheck from https://etrecheck.com

Runtime 2:04

Performance: Excellent

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Problem: Beachballing

Description:

iMac hangs up after logging out.

Hardware Information: ⓘ

    iMac (27-inch, Late 2012)

    [Technical Specifications] - [User Guide] - [Warranty & Service]

    iMac - model: iMac13,2

    1 3.4 GHz Intel Core i7 CPU: 4-core

    24 GB RAM Upgradeable - [Instructions]

        BANK 0/DIMM0

            8 GB DDR3 1600 MHz ok

        BANK 1/DIMM0

            Empty  

        BANK 0/DIMM1

            8 GB DDR3 1600 MHz ok

        BANK 1/DIMM1

            8 GB DDR3 1600 MHz ok

    Bluetooth: Good - Handoff/Airdrop2 supported

    Wireless:  en1: 802.11 a/b/g/n

Video Information: ⓘ

    NVIDIA GeForce GTX 675MX - VRAM: 1024 MB

        iMac 2048 x 1152

System Software: ⓘ

    macOS Sierra  10.12 (16A323) - Time since boot: about one day

Disk Information: ⓘ

    APPLE HDD ST1000DM003 disk0 : (1 TB) (Rotational)

        EFI (disk0s1) <not mounted> : 210 MB

        Macintosh 27 HD (disk0s2) /  [Startup]: 999.35 GB (889.80 GB free)

        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB

USB Information: ⓘ

    Apple Inc. BRCM20702 Hub

        Apple Inc. Bluetooth USB Host Controller

    Apple, Inc. Keyboard Hub

        Apple Inc. Apple Keyboard

    Apple Inc. FaceTime HD Camera (Built-in)

    Seagate  BUP Slim BK

    Logitech USB Receiver

Thunderbolt Information: ⓘ

    Apple Inc. thunderbolt_bus

Gatekeeper: ⓘ

    Mac App Store and identified developers

Kernel Extensions: ⓘ

        /Library/Application Support/Symantec/AntiVirus

    [loaded]    com.symantec.kext.SymAPComm (12.10f21 - SDK 10.6 - 2016-10-17) [Support]

        /Library/Application Support/Symantec/Daemon/SymDaemon.bundle/Contents/PlugIns/FileSecurity.bundle/C ontents/Resources

    [loaded]    com.symantec.kext.filesecurity (2.10 - SDK 10.6 - 2016-09-15) [Support]

        /Library/Application Support/Symantec/Daemon/SymDaemon.bundle/Contents/PlugIns/SymFirewall.bundle/Co ntents/Resources

    [not loaded]    com.symantec.kext.fw (5.7 - SDK 10.6 - 2016-09-15) [Support]

        /Library/Extensions

    [not loaded]    com.pgp.iokit.PGPdiskDriver (9.10.0.500 - 2016-10-14) [Support]

    [not loaded]    com.pgp.kext.PGPnke (9.10.0.500 - 2016-10-14) [Support]

    [loaded]    com.symantec.kext.internetSecurity (5.7.1 - SDK 10.11 - 2016-10-14) [Support]

    [loaded]    com.symantec.kext.ips (3.10.5 - SDK 10.11 - 2016-10-14) [Support]

    [loaded]    com.symantec.kext.pf (5.10.1 - SDK 10.11 - 2016-10-14) [Support]

        /System/Library/Extensions

    [not loaded]    com.kensington.mouseworks.iokit.KensingtonMouseDriver (3.0 - 2016-10-14) [Support]

    [not loaded]    com.pgp.iokit.PGPwdeFilter (9.10.0.500 - 2016-10-14) [Support]

    [not loaded]    com.seagate.driver.PowSecDriverCore (5.2.6 (26913) - SDK 10.4 - 2016-10-14) [Support]

        /System/Library/Extensions/KensingtonMouseDriver.kext/Contents/PlugIns

    [not loaded]    com.kensington.mouseworks.driver.ADBID32Mouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.ADBID32MouseX1 (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.ADBID4Mouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.ADBID4MouseX1 (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.KMWBluetoothHIDMouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.KMWBluetoothOldHIDMouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.KMWUSBHIDMouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.USBMouseX1 (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.VirtualMouse (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.driver.VirtualMouseX1 (3.0 - 2014-02-08) [Support]

    [not loaded]    com.kensington.mouseworks.iokit.KensingtonMouseDriverX1 (3.0 - 2014-02-08) [Support]

        /System/Library/Extensions/Seagate Storage Driver.kext/Contents/PlugIns

    [not loaded]    com.seagate.driver.PowSecLeafDriver_10_4 (5.2.6 (26913) - SDK 10.4 - 2014-09-12) [Support]

    [not loaded]    com.seagate.driver.PowSecLeafDriver_10_5 (5.2.6 (26913) - SDK 10.5 - 2014-09-12) [Support]

    [not loaded]    com.seagate.driver.SeagateDriveIcons (5.2.6 (26913) - SDK 10.4 - 2014-09-12) [Support]

        /Tom's Software updates-loaded/LCC Installer.app

    [not loaded]    com.Logitech.Control Center.HID Driver (3.9.0 - SDK 10.8 - 2015-09-18) [Support]

    [not loaded]    com.Logitech.Unifying.HID Driver (1.3.1 - SDK 10.8 - 2015-09-18) [Support]

System Launch Agents: ⓘ

    [not loaded]    8 Apple tasks

    [loaded]    170 Apple tasks

    [running]    93 Apple tasks

System Launch Daemons: ⓘ

    [running]    com.seagate.TBDecorator.plist (2013-10-11) [Support]

    [not loaded]    39 Apple tasks

    [loaded]    160 Apple tasks

    [running]    105 Apple tasks

Launch Agents: ⓘ

    [running]    com.Logitech.Control Center.Daemon.plist (2015-09-18) [Support]

    [not loaded]    com.adobe.AAM.Updater-1.0.plist (2013-11-04) [Support]

    [failed]    com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist (2016-07-13) [Support]

    [loaded]    com.google.keystone.agent.plist (2016-07-12) [Support]

    [loaded]    com.oracle.java.Java-Updater.plist (2015-08-30) [Support]

    [failed]    com.symantec.errorreporter-periodicagent.plist (2016-09-15) [Support]

    [loaded]    com.symantec.nis.application.plist (2013-09-18) [Support]

    [running]    com.symantec.uiagent.application.plist (2016-08-18) [Support]

    [not loaded]    net.culater.SIMBL.Agent.plist (2010-04-26) [Support]

Launch Daemons: ⓘ

    [loaded]    com.adobe.ARMDC.Communicator.plist (2016-07-13) [Support]

    [loaded]    com.adobe.ARMDC.SMJobBlessHelper.plist (2016-07-13) [Support]

    [loaded]    com.adobe.fpsaud.plist (2016-08-29) [Support]

    [loaded]    com.apple.installer.osmessagetracing.plist (2016-09-13)

    [loaded]    com.google.keystone.daemon.plist (2016-09-02) [Support]

    [loaded]    com.microsoft.office.licensing.helper.plist (2010-08-25) [Support]

    [loaded]    com.oracle.java.Helper-Tool.plist (2015-08-30) [Support]

    [running]    com.symantec.deepsight-extractor.plist (2013-01-24) [Support]

    [failed]    com.symantec.errorreporter-periodic.plist (2016-09-15) [Support]

    [loaded]    com.symantec.liveupdate.daemon.ondemand.plist (2016-08-17) [Support]

    [loaded]    com.symantec.liveupdate.daemon.plist (2016-08-17) [Support]

    [not loaded]    com.symantec.nav.migrateqtf.plist (2013-09-25) [Support]

    [running]    com.symantec.nfm.wps.plist (2016-09-13) [Support]

    [running]    com.symantec.sharedsettings.plist (2015-08-13) [Support]

    [running]    com.symantec.symdaemon.plist (2014-09-17) [Support]

User Login Items: ⓘ

    System Events    Application  (/System/Library/CoreServices/System Events.app)

Internet Plug-ins: ⓘ

    OfficeLiveBrowserPlugin: 12.3.5 (2013-03-27) [Support]

    Flip4Mac WMV Plugin: 3.2.0.16   - SDK 10.8 (2013-10-09) [Support]

    AdobePDFViewerNPAPI: 15.010.20060 - SDK 10.8 (2016-03-08) [Support]

    FlashPlayer-10.6: 23.0.0.162 - SDK 10.9 (2016-09-14) [Support]

    Silverlight: 5.1.20913.0 - SDK 10.6 (2014-01-21) [Support]

    QuickTime Plugin: 7.7.3 (2016-09-13)

    Flash Player: 23.0.0.162 - SDK 10.9 (2016-09-14) Outdated! Update

    iPhotoPhotocast: 6.0 (2013-03-27)

    SharePointBrowserPlugin: 14.6.9 - SDK 10.6 (2016-10-13) [Support]

    AdobePDFViewer: 15.010.20060 - SDK 10.8 (2016-03-08) [Support]

    CANONiMAGEGATEWAYDL: 3.1.0.2 (2013-03-27) [Support]

    GarminGpsControl: 4.0.3.0 Release - SDK 10.6 (2013-04-14) [Support]

    JavaAppletPlugin: Java 8 Update 101 build 13 (2016-07-25) Check version

Safari Extensions: ⓘ

    AdBlock - BetaFish, Inc. - https://getadblock.com (2016-05-20)

    DuckDuckGo - DuckDuckGo - http://duckduckgo.com (2016-10-04)

    ClickToFlash - Marc Hoyois - http://hoyois.github.com/safariextensions/clicktoplugin/ (2016-02-04)

    Awesome Screenshot - Diigo - http://www.diigo.com/ (2015-09-14)

    Bing Highlights - Microsoft - http://go.microsoft.com/fwlink/?LinkId=198222 (2011-10-13)

    Translate - SideTree.com - Apps for Mac and Web - http://SideTree.com/extensions.html#Translate (2016-01-29)

3rd Party Preference Panes: ⓘ

    Flash Player (2016-08-29) [Support]

    Flip4Mac WMV (2013-03-29) [Support]

    Java (2016-07-25) [Support]

    Logitech Control Center (2016-05-25) [Support]

    Norton\nQuickMenu (2016-09-15) [Support]

    Paragon NTFS for Mac ® OS X (2014-09-12) [Support]

Time Machine: ⓘ

    Skip System Files: NO

    Mobile backups: OFF

    Auto backup: YES

    Volumes being backed up:

        Macintosh 27 HD: Disk size: 999.35 GB Disk used: 109.55 GB

    Destinations:

        Daily Backup [Local]

        Total size: 499.62 GB

        Total number of backups: 122

        Oldest backup: 9/13/14, 11:07

        Last backup: 10/17/16, 12:12

        Size of backup disk: Adequate

            Backup size 499.62 GB > (Disk used 109.55 GB X 3)

        Freeagent 320 iMac Bkup [Local]

        Total size: 320.07 GB

        Total number of backups: 15

        Oldest backup: 5/21/14, 06:43

        Last backup: 8/29/16, 10:34

        Size of backup disk: Too small

            Backup size 320.07 GB < (Disk used 109.55 GB X 3)

        Backup HD #2 [Local]

        Total size: 500.10 GB

        Total number of backups: 96

        Oldest backup: 3/29/15, 13:17

        Last backup: 10/17/16, 13:07

        Size of backup disk: Adequate

            Backup size 500.10 GB > (Disk used 109.55 GB X 3)

Top Processes by CPU: ⓘ

         3%    kernel_task

         2%    WindowServer

         2%    fontd

         0%    com.apple.AmbientDisplayAgent

         0%    SymDaemon

Top Processes by Memory: ⓘ

    1.42 GB    softwareupdated

    1.37 GB    kernel_task

    664 MB    mdworker(22)

    565 MB    SymDaemon

    442 MB    com.apple.WebKit.WebContent(3)

Virtual Memory Information: ⓘ

    15.00 GB    Free RAM

    9.37 GB    Used RAM (5.29 GB Cached)

    0 B    Swap Used

Diagnostics Information: ⓘ

    Oct 17, 2016, 12:59:04 PM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-17-125904_[redacted].crash

        /Library/ScriptingAdditions/SIMBL.osax/Contents/Resources/SIMBL Agent.app/Contents/MacOS/SIMBL Agent

    Oct 17, 2016, 11:34:09 AM    ~/Library/Logs/DiagnosticReports/soagent_2016-10-17-113409_[redacted].crash

        /System/Library/PrivateFrameworks/MessagesKit.framework/Versions/A/Resources/so agent.app/Contents/MacOS/soagent

    Oct 17, 2016, 11:34:09 AM    ~/Library/Logs/DiagnosticReports/photoanalysisd_2016-10-17-113409_[redacted].cr ash

        /System/Library/PrivateFrameworks/PhotoAnalysis.framework/Versions/A/Support/ph otoanalysisd

    Oct 17, 2016, 11:34:09 AM    ~/Library/Logs/DiagnosticReports/media-indexer_2016-10-17-113409_[redacted].cra sh

        /System/Library/PrivateFrameworks/AssistantServices.framework/Versions/A/XPCSer vices/media-indexer.xpc/Contents/MacOS/media-indexer

    Oct 17, 2016, 11:33:49 AM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-17-113349_[redacted].crash

    Oct 16, 2016, 04:17:45 PM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-16-161745_[redacted].crash

    Oct 16, 2016, 12:58:23 PM    ~/Library/Logs/DiagnosticReports/PGP Engine_2016-10-16-125823_[redacted].crash

        com.pgp.engine - /Volumes/VOLUME/Library/Application Support/PGP/PGP Engine.app/Contents/MacOS/PGP Engine

    Oct 16, 2016, 12:56:30 PM    ~/Library/Logs/DiagnosticReports/PGP Engine_2016-10-16-125630_[redacted].crash

    Oct 16, 2016, 12:53:50 PM    ~/Library/Logs/DiagnosticReports/PGP Engine_2016-10-16-125350_[redacted].crash

    Oct 16, 2016, 12:14:31 PM    ~/Library/Logs/DiagnosticReports/EtreCheck_2016-10-16-121431_[redacted].crash

        com.etresoft.EtreCheck - /Volumes/VOLUME/*/EtreCheck.app/Contents/MacOS/EtreCheck

    Oct 16, 2016, 12:09:39 PM    /Library/Logs/DiagnosticReports/SymDaemon_2016-10-16-120939_[redacted].cpu_reso urce.diag [Details]

        /Library/Application Support/Symantec/*/SymDaemon.bundle/Contents/MacOS/SymDaemon

    Oct 16, 2016, 11:18:38 AM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-16-111838_[redacted].crash

    Oct 16, 2016, 11:09:22 AM    Self test - passed

    Oct 15, 2016, 04:12:38 PM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-15-161238_[redacted].crash

    Oct 15, 2016, 04:11:15 PM    /Library/Logs/DiagnosticReports/SymDaemon_2016-10-15-161115_[redacted].crash

    Oct 14, 2016, 04:41:53 PM    ~/Library/Logs/DiagnosticReports/SIMBL Agent_2016-10-14-164153_[redacted].crash

    Oct 5, 2016, 11:32:56 AM    /Library/Logs/DiagnosticReports/Kernel_2016-10-05-113256_[redacted].panic [Details]

Thankyou rkaufmann87!  Your help has led me to a fix I think.  I removed all old Adobe Flash, etc. files and the problem seems to be cured.  I may have deleted an old Norton file also, all with the help of you and EtreCheck.