My imac randomly restarts and then takes 45 minutes to load. What can I do to fix it?

I upgraded to Mavericks as soon as it released a few weeks ago. This is the only change I've made, no new programs or apps otherwise. Last week my imac randomly restarted and then took 45 minutes to load. It's done this about 5 times in the last week. I need some help resolving this.
I've gone through the disk utility to repair/verify the hard drive, and it's done nothing to solve this issue.
I do have a time machine and am wondering if it would be too drastic to reformat and restore from the time machine.
Any help would be appreciated! I have work to do!
Imac 21.5 inch mid 2010, OS X Mavericks

OK here they are:
Hardware Information:
 iMac (21.5-inch, Mid 2010)
 iMac - model: iMac11,2
 1 3.06 GHz Intel Core i3 CPU: 2 cores
 16 GB RAM
Video Information:
 ATI Radeon HD 4670 - VRAM: 256 MB
Audio Plug-ins:
 BluetoothAudioPlugIn: Version: 1.0
 AirPlay: Version: 1.9
 AppleAVBAudio: Version: 2.0.0
 iSightAudio: Version: 7.7.3
System Software:
 OS X 10.9 (13A603) - Uptime: 0 days 2:54:13
Disk Information:
 WDC WD5000AAKS-40V6A0 disk0 : (500.11 GB)
 EFI (disk0s1) <not mounted>: 209.7 MB
 Macintosh HD (disk0s2) /: 499.25 GB (277.14 GB free)
 Recovery HD (disk0s3) <not mounted>: 650 MB
 HL-DT-STDVDRW GA32N
USB Information:
 MICRONET FANTOM DRIVE 2 TB
 EFI (disk1s1) <not mounted>: 209.7 MB
 Time Machine Backups (disk1s2) /Volumes/Time Machine Backups: 2 TB (201.03 GB free)
 Apple Internal Memory Card Reader
 Apple Inc. BRCM2046 Hub
 Apple Inc. Bluetooth USB Host Controller
 Wacom Co.,Ltd. CTH-460
 Apple, Inc. Keyboard Hub
 Apple, Inc Apple Keyboard
 LaCie P'9231 Desktop Drive 2 TB
 EFI (disk2s1) <not mounted>: 209.7 MB
 LaCie (disk2s2) /Volumes/LaCie: 2 TB (1.15 TB free)
 Apple Inc. Built-in iSight
 Apple Computer, Inc. IR Receiver
FireWire Information:
Thunderbolt Information:
Kernel Extensions:
 com.rogueamoeba.HermesAudio (4.1.0)
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
 [loaded] com.adobe.fpsaud.plist
 [loaded] com.adobe.SwitchBoard.plist
 [loaded] com.crashplan.engine.plist
 [invalid] com.crashplan.engine.plist.save
 [loaded] com.flipvideo.FlipShareServer.launchd.plist
 [loaded] com.google.keystone.daemon.plist
 [loaded] com.leapfrog.connect.shell.plist
 [loaded] com.macpaw.CleanMyMac2.Agent.plist
 [loaded] com.oracle.java.JavaUpdateHelper.plist
 [loaded] com.rogueamoeba.hermes.plist
Launch Agents:
 [not loaded] com.adobe.AAM.Updater-1.0.plist
 [loaded] com.adobe.CS5ServiceManager.plist
 [loaded] com.flipvideo.FlipShare.AutoRun.plist
 [loaded] com.google.keystone.agent.plist
 [loaded] com.wacom.pentablet.plist
User Launch Agents:
 [loaded] com.adobe.AAM.Updater-1.0.plist
 [loaded] com.adobe.ARM.[...].plist
 [loaded] com.crashplan.javacheck.plist
 [not loaded] com.macpaw.CleanMyMac.trashSizeWatcher.plist
 [not loaded] com.macpaw.CleanMyMac.volumeWatcher.plist
 [loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist
 [loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist
 [loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist
User Login Items:
 Monitor
 Dropbox
 CrashPlan menu bar
 Google Chrome
 HazelHelper
3rd Party Preference Panes:
 DivX
 Flash Player
 Flip4Mac WMV
 Growl
 Hazel
 MacFUSE
 PenTablet
Internet Plug-ins:
 AdobeAAMDetect.plugin
 Default Browser.plugin
 DirectorShockwave.plugin
 DivXBrowserPlugin.plugin
 Flash Player.plugin
 FlashPlayer-10.6.plugin
 Flip4Mac WMV Plugin.plugin
 googletalkbrowserplugin.plugin
 iPhotoPhotocast.plugin
 JavaAppletPlugin.plugin
 NP_2020Player_IKEA.plugin
 npgtpo3dautoplugin.plugin
 o1dbrowserplugin.plugin
 OfficeLiveBrowserPlugin.plugin
 OVSHelper.plugin
 QuickTime Plugin.plugin
 Silverlight.plugin
 WacomNetscape.plugin
 WacomTabletPlugin.plugin
User Internet Plug-ins:
 CitrixOnlineWebDeploymentPlugin.plugin
Bad Fonts:
 None
Time Machine:
 Skip System Files: NO
 Auto backup: YES
 Volumes being backed up:
 LaCie: Disk size: 2 TB Disk used: 846.34 GB
 Macintosh HD: Disk size: 499.25 GB Disk used: 222.11 GB
 Destinations:
 Time Machine Backups [Local] (Last used)
 Total size: 2 TB
 Total number of backups: 36
 Oldest backup: 2013-10-25 13:10:19 +0000
 Last backup: 2013-11-09 15:08:15 +0000
 Size of backup disk: Too small
 Backup size 2 TB < (Disk used 1.07 TB X 3)
Top Processes by CPU:
 8% WindowServer
 6% PenTabletDriver
 3% ConsumerTouchDriver
 2% Google Chrome
 2% EtreCheck
 1% Dock
 0% Dropbox
 0% CrashPlan menu bar
 0% fontd
 0% GoogleTalkPlugin
Top Processes by Memory:
 410 MB java
 377 MB Google Chrome
 246 MB mds_stores
 197 MB com.apple.IconServicesAgent
 131 MB Adobe Bridge CS5
 115 MB Finder
 115 MB Google Chrome Helper
 82 MB WindowServer
 66 MB Dropbox
 49 MB PenTabletDriver
Virtual Memory Statistics:
 8.92 GB Free RAM
 5.04 GB Active RAM
 800 MB Inactive RAM
 1.26 GB Wired RAM
 1.65 GB Page-ins
 0 B Page-outs

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My imac randomly restarts and then takes 45 minutes to load. What can I do to fix it?

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