Hoi Pieter,
Hier het overicht:
EtreCheck version: 2.9.10 (261)
Report generated 2016-03-26 17:59:24
Download EtreCheck from https://etrecheck.com
Runtime 3:02
Performance: Good
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Problem: Other problem
Description:
Mac mini freezes every day
Hardware Information: ⓘ
    Mac mini (Late 2012) 
    [Technical Specifications] - [User Guide] - [Warranty & Service]
    Mac mini - model: Macmini6,1
    1 2,5 GHz Intel Core i5 CPU: 2-core
    12 GB RAM Upgradeable - [Instructions]
        BANK 0/DIMM0
            4 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless:  en1: 802.11 a/b/g/n
Video Information: ⓘ
    Intel HD Graphics 4000
        S27B970 2560 x 1440 @ 60 Hz
System Software: ⓘ
    OS X El Capitan 10.11.3 (15D21) - Time since boot: about 2 hours
Disk Information: ⓘ
    APPLE HDD HTS545050A7E362 disk0 : (500,11 GB) (Rotational)
        EFI (disk0s1) <not mounted> : 210 MB 
        Macintosh hd (disk0s2) / : 359.76 GB (57.32 GB free)
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB 
        BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 139.48 GB (49.14 GB free)
USB Information: ⓘ
    Apple, Inc. IR Receiver 
    Apple Inc. BRCM20702 Hub 
        Apple Inc. Bluetooth USB Host Controller 
    Seagate  Backup+  BK 1 TB
        EFI (disk1s1) <not mounted> : 210 MB 
        Seagate Backup Plus Drive (disk1s2) /Volumes/Seagate Backup Plus Drive : 999.86 GB (5.07 GB free)
Thunderbolt Information: ⓘ
    Apple Inc. thunderbolt_bus
Configuration files: ⓘ
    /etc/hosts - Count: 20
Gatekeeper: ⓘ
    Mac App Store and identified developers
Kernel Extensions: ⓘ
        /Applications/DAEMON Tools Lite.app
    [not loaded]    com.disc-soft.DAEMONTools.VirtualSCSIBus (1.0.2 - SDK 10.8 - 2014-07-09) [Support]
System Launch Agents: ⓘ
    [not loaded]    7 Apple tasks
    [loaded]    155 Apple tasks
    [running]    74 Apple tasks
System Launch Daemons: ⓘ
    [not loaded]    43 Apple tasks
    [loaded]    156 Apple tasks
    [running]    89 Apple tasks
Launch Agents: ⓘ
    [not loaded]    com.adobe.AAM.Updater-1.0.plist (2014-06-24) [Support]
    [loaded]    com.oracle.java.Java-Updater.plist (2014-06-13) [Support]
Launch Daemons: ⓘ
    [loaded]    com.adobe.SwitchBoard.plist (2014-06-24) [Support]
    [loaded]    com.adobe.fpsaud.plist (2016-03-19) [Support]
    [loaded]    com.disc-soft.DAEMONTools.PrivilegedHelper.plist (2014-06-16) [Support]
    [loaded]    com.macpaw.CleanMyMac2.Agent.plist (2015-05-10) [Support]
    [loaded]    com.macpaw.CleanMyMac3.Agent.plist (2015-05-09) [Support]
    [loaded]    com.malwarebytes.MBAMHelperTool.plist (2015-12-06) [Support]
    [loaded]    com.oracle.java.Helper-Tool.plist (2014-06-13) [Support]
User Launch Agents: ⓘ
    [loaded]    com.bittorrent.uTorrent.plist (2015-12-09) [Support]
    [loaded]    com.google.keystone.agent.plist (2016-03-03) [Support]
    [loaded]    com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist (2015-05-10) [Support]
    [loaded]    com.macpaw.CleanMyMac2Helper.scheduledScan.plist (2015-05-10) [Support]
    [loaded]    com.macpaw.CleanMyMac2Helper.trashWatcher.plist (2015-05-10) [Support]
    [loaded]    com.macpaw.CleanMyMac3.Scheduler.plist (2015-05-09) [Support]
    [loaded]    com.valvesoftware.steamclean.plist (2015-05-10) [Support]
    [not loaded]    com.zeobit.MacKeeper.Helper (2014-06-16) [Support]
User Login Items: ⓘ
    iTunesHelper    Programma  (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    PopChar    Programma  (/Applications/PopChar.app)
Other Apps: ⓘ
    [running]    com.macility.popchar3.55392
    [running]    net.battle.app.160672
    [running]    unity.Blizzard Entertainment.Hearthstone.176352.6D548C63-21B6-47E5-B98C-8ACEB4039B18
    [loaded]    407 Apple tasks
    [running]    193 Apple tasks
Internet Plug-ins: ⓘ
    AdobeAAMDetect: AdobeAAMDetect 1.0.0.0 - SDK 10.6 (2014-06-24) [Support]
    FlashPlayer-10.6: 21.0.0.197 - SDK 10.6 (2016-03-24) [Support]
    QuickTime Plugin: 7.7.3 (2016-03-05)
    Flash Player: 21.0.0.197 - SDK 10.6 (2016-03-24) [Support]
    Default Browser: 601 - SDK 10.11 (2016-03-05)
    PepperFlashPlayer: 21.0.0.197 - SDK 10.6 (2016-03-25) [Support]
    Silverlight: 5.1.40416.0 - SDK 10.6 (2015-05-23) [Support]
    JavaAppletPlugin: Java 8 Update 73 build 02 (2016-02-17) Check version
Safari Extensions: ⓘ
    Adblock Plus (2015-03-14)
    AdBlock (2015-04-11)
3rd Party Preference Panes: ⓘ
    Flash Player (2016-03-19) [Support]
    Java (2016-02-17) [Support]
Time Machine: ⓘ
    Skip System Files: NO
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
        Macintosh hd: Disk size: 359.76 GB Disk used: 302.44 GB
    Destinations:
        Seagate Backup Plus Drive [Local] 
        Total size: 999.86 GB 
        Total number of backups: 115 
        Oldest backup: 03-07-14 14:43 
        Last backup: 26-03-16 14:53 
        Size of backup disk: Adequate
            Backup size 999.86 GB > (Disk used 302.44 GB X 3)
Top Processes by CPU: ⓘ
        43%    Opera Helper(10)
        16%    Hearthstone
        13%    battle.net
        13%    Opera
        10%    mdworker(11)
Top Processes by Memory: ⓘ
    3.08 GB    com.apple.WebKit.WebContent(20)
    1.24 GB    Opera Helper(10)
    1.03 GB    kernel_task
    467 MB    softwareupdated
    393 MB    Safari
Virtual Memory Information: ⓘ
    566 MB    Free RAM 
    11.00 GB    Used RAM (2.66 GB Cached)
    0 B    Swap Used 
Diagnostics Information: ⓘ
    Mar 26, 2016, 03:33:11 PM    /Library/Logs/DiagnosticReports/battle.net_2016-03-26-153311_[redacted].hang
        /Applications/Battle.net.app/Contents/Battle.net.6890/Battle.net.app/Contents/MacOS/battle.net
    Mar 26, 2016, 03:32:54 PM    /Library/Logs/DiagnosticReports/Notes_2016-03-26-153254_[redacted].hang
        /Applications/Notes.app/Contents/MacOS/Notes
    Mar 26, 2016, 03:25:19 PM    Self test - passed
    Mar 25, 2016, 11:53:55 PM    /Library/Logs/DiagnosticReports/battle.net_2016-03-25-235355_[redacted].hang
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Hoop dat je er wat wijzer van wordt.