I copy to you the report log of Etrecheck.
Problem description:
Spinning Wheel, Mac freezes
EtreCheck version: 2.4.2 (142)
Report generated 9/26/15, 6:25 PM
Download EtreCheck from http://etresoft.com/etrecheck
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Click the [Click for details] links for more information about that line.
Hardware Information: (What does this mean?)
iMac (27-inch, Mid 2011) (Technical Specifications)
iMac - model: iMac12,2
1 2.7 GHz Intel Core i5 CPU: 4-core
8 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
BANK 0/DIMM1
4 GB DDR3 1333 MHz ok
BANK 1/DIMM1
Empty
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: (What does this mean?)
AMD Radeon HD 6770M - VRAM: 512 MB
iMac 2560 x 1440
System Software: (What does this mean?)
OS X 10.10.5 (14F27) - Time since boot: about one day
Disk Information: (What does this mean?)
ST31000528AS disk0 : (1 TB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 999.35 GB (847.52 GB free) - 604 errors
Drive failure!
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
OPTIARC DVD RW AD-5680H ()
USB Information: (What does this mean?)
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
LG Electronics Inc. LG External HDD 1 TB
MAIN (disk1s1) /Volumes/MAIN : 900.13 GB (824.78 GB free)
disk1s2 (disk1s2) <not mounted> : 100.07 GB
Apple Computer, Inc. IR Receiver
Apple Internal Memory Card Reader
Thunderbolt Information: (What does this mean?)
Apple Inc. thunderbolt_bus
Configuration files: (What does this mean?)
/etc/hosts - Count: 26
Gatekeeper: (What does this mean?)
Anywhere
Kernel Extensions: (What does this mean?)
/Applications/Parallels Desktop.app
[not loaded] com.parallels.kext.hidhook (9.0 23046.917896) [Click for support]
[not loaded] com.parallels.kext.hypervisor (9.0 23046.917896) [Click for support]
[not loaded] com.parallels.kext.netbridge (9.0 23046.917896) [Click for support]
[not loaded] com.parallels.kext.usbconnect (9.0 23046.917896) [Click for support]
[not loaded] com.parallels.kext.vnic (9.0 23046.917896) [Click for support]
/Library/Application Support/Hotspot Shield
[not loaded] com.anchorfree.tun (1.1.1 - SDK 10.8) [Click for support]
/System/Library/Extensions
[not loaded] com.paceap.kext.PACESupport (5.8) [Click for support]
[not loaded] com.paceap.kext.PACESupport2 (5.8) [Click for support]
[not loaded] com.paceap.kext.pacesupport.master (5.8) [Click for support]
/System/Library/Extensions/PACESupportFamily.kext/Contents/PlugIns
[not loaded] com.paceap.kext.pacesupport.leopard (5.8 - SDK 10.4) [Click for support]
[not loaded] com.paceap.kext.pacesupport.panther (5.8 - SDK 10.-1) [Click for support]
[loaded] com.paceap.kext.pacesupport.snowleopard (5.8 - SDK 10.6) [Click for support]
[not loaded] com.paceap.kext.pacesupport.tiger (5.8 - SDK 10.4) [Click for support]
Startup Items: (What does this mean?)
ChmodBPF: Path: /Library/StartupItems/ChmodBPF
Jaksta: Path: /Library/StartupItems/Jaksta
PACESupport: Path: /Library/StartupItems/PACESupport
Startup items are obsolete in OS X Yosemite
Problem System Launch Daemons: (What does this mean?)
[failed] com.apple.smbd.plist
Launch Agents: (What does this mean?)
[not loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.adobe.AdobeCreativeCloud.plist [Click for support]
[running] com.brother.LOGINserver.plist [Click for support]
[loaded] com.divx.dms.agent.plist [Click for support]
[loaded] com.divx.update.agent.plist [Click for support]
[loaded] com.google.keystone.agent.plist [Click for support]
[loaded] com.oracle.java.Java-Updater.plist [Click for support]
[loaded] org.macosforge.xquartz.startx.plist [Click for support]
Launch Daemons: (What does this mean?)
[loaded] com.adobe.fpsaud.plist [Click for support]
[loaded] com.adobe.SwitchBoard.plist [Click for support]
[loaded] com.anchorfree.ajaxserver.plist [Click for support]
[loaded] com.google.keystone.daemon.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]
[running] com.paceap.eden.licensed.plist [Click for support]
[loaded] org.macosforge.xquartz.privileged_startx.plist [Click for support]
[loaded] PACESupport.plist [Click for support]
User Launch Agents: (What does this mean?)
[loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.adobe.ARM.[...].plist [Click for support]
[failed] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist
[loaded] com.facebook.videochat.[redacted].plist [Click for support]
[loaded] com.macpaw.CleanMyMac.helperTool.plist [Click for support]
User Login Items: (What does this mean?)
Android File Transfer Agent Aplicación (~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Google Chrome Aplicación Hidden (/Applications/Google Chrome.app)
Dropbox Aplicación (/Applications/Dropbox.app)
Internet Plug-ins: (What does this mean?)
o1dbrowserplugin: Version: 5.41.0.0 - SDK 10.8 [Click for support]
OVSHelper: Version: 1.1 [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: 19.0.0.185 - SDK 10.6 [Click for support]
DivX Web Player: Version: 3.2.4.1250 - SDK 10.6 [Click for support]
AdobePDFViewerNPAPI: Version: 10.1.15 [Click for support]
Flash Player: Version: 19.0.0.185 - SDK 10.6 [Click for support]
iPhotoPhotocast: Version: 7.0 - SDK 10.8
googletalkbrowserplugin: Version: 5.41.0.0 - SDK 10.8 [Click for support]
QuickTime Plugin: Version: 7.7.3
AdobePDFViewer: Version: 10.1.15 [Click for support]
SharePointBrowserPlugin: Version: 14.2.5 - SDK 10.6 [Click for support]
Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
JavaAppletPlugin: Version: Java 8 Update 60 build 27 Check version
Safari Extensions: (What does this mean?)
Adblock Plus
Twitter for Safari
3rd Party Preference Panes: (What does this mean?)
Flash Player [Click for support]
FUSE for OS X (OSXFUSE) [Click for support]
Java [Click for support]
MusicManager [Click for support]
Perian [Click for support]
Tuxera NTFS [Click for support]
Time Machine: (What does this mean?)
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 999.35 GB Disk used: 151.82 GB
Destinations:
HD Julian [Local]
Total size: 999.86 GB
Total number of backups: 19
Oldest backup: 2014-08-13 20:44:40 +0000
Last backup: 2014-09-06 16:37:54 +0000
Size of backup disk: Adequate
Backup size 999.86 GB > (Disk used 151.82 GB X 3)
Top Processes by CPU: (What does this mean?)
4% WindowServer
3% com.apple.WebKit.WebContent(4)
2% natpmpd
1% fontd
1% Safari
Top Processes by Memory: (What does this mean?)
1.13 GB com.apple.WebKit.WebContent(4)
756 MB kernel_task
532 MB Google Chrome Helper(5)
475 MB softwareupdated
434 MB Finder
Virtual Memory Information: (What does this mean?)
1.37 GB Free RAM
6.63 GB Used RAM (1.74 GB Cached)
0 B Swap Used
Diagnostics Information: (What does this mean?)
Sep 25, 2015, 01:06:45 PM Self test - passed
Sep 24, 2015, 07:06:46 PM ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-09-24-190646_[ redacted].crash