Also: ich hatte kürzlich den MacKeeper bei einer Installation versehentlich installiert und dann kurz geschaut: War Mist, also wieder deinstalliert (Papierkorb) Reicht nicht, weiß ich schon, aber da mein Problem schon länger da ist, habe ich erst einmal keinen Zusammenhang hergstellt. Hier der EtreCheck: Ich versteh davon so gut wie gar nichts.
EtreCheck version: 2.1.8 (121)
Report generated 8. April 2015 17:12:22 MESZ
Download EtreCheck from
http://etresoft.com/etrecheck
Click 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:

MacBook Pro (Retina, 13-inch, Late 2013) (Technical Specifications)
MacBook Pro - model: MacBookPro11,1
1 2.6 GHz Intel Core i5 CPU: 2-core
16 GB RAM Not upgradeable
BANK 0/DIMM0
8 GB DDR3 1600 MHz ok
BANK 1/DIMM0
8 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en0: 802.11 a/b/g/n/ac
Battery Health: Normal - Cycle count 61
Video Information:

Intel Iris
Color LCD spdisplays_2560x1600Retina
System Software:

OS X 10.10.2 (14C1514) - Time since boot: 2 days 18:1:33
Disk Information:

APPLE SSD SM0512F disk0 : (500,28 GB)
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / : 499.05 GB (153.95 GB free)
Core Storage: disk0s2 499.42 GB Online
USB Information:

Apple Internal Memory Card Reader
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Thunderbolt Information:

Apple Inc. thunderbolt_bus
Gatekeeper:

Mac App Store and identified developers
Kernel Extensions:

/Applications/Parallels Desktop.app
[not loaded] com.parallels.kext.hidhook (8.0 18615.948847) [Click for support]
[not loaded] com.parallels.kext.hypervisor (8.0 18615.948847) [Click for support]
[not loaded] com.parallels.kext.netbridge (8.0 18615.948847) [Click for support]
[not loaded] com.parallels.kext.usbconnect (8.0 18615.948847) [Click for support]
[not loaded] com.parallels.kext.vnic (8.0 18615.948847) [Click for support]
/Library/Extensions
[loaded] org.virtualbox.kext.VBoxDrv (3.1.2) [Click for support]
[not loaded] org.virtualbox.kext.VBoxNetAdp (3.1.2) [Click for support]
[not loaded] org.virtualbox.kext.VBoxNetFlt (3.1.2) [Click for support]
[loaded] org.virtualbox.kext.VBoxUSB (3.1.2) [Click for support]
/System/Library/Extensions
[loaded] com.delantis.kext.tcpblocknke (2.2.6 - SDK 10.6) [Click for support]
[not loaded] com.eltima.SyncMate.kext (0.2.3b2) [Click for support]
[loaded] com.taoeffect.ispy.kext (2.0.2 - SDK 10.2) [Click for support]
[not loaded] com.wacom.kext.pentablet (5.3.5 - SDK 10.9) [Click for support]
[not loaded] jp.co.panasonic.driver.p2drivefamily (2.1.0) [Click for support]
/System/Library/Extensions/P2DriveFamilyDriver.kext/Contents/PlugIns
[not loaded] jp.co.panasonic.driver.PCD35Device (1.2.0) [Click for support]
[not loaded] jp.panasonic.iokit.P2FireWireSBP2 (4.0.5) [Click for support]
Startup Items:

ParallelsTransporter: Path: /Library/StartupItems/ParallelsTransporter
VirtualBox: Path: /Library/StartupItems/VirtualBox
Startup items are obsolete in OS X Yosemite
Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[loaded] com.quark.quarkupdate.agent.plist [Click for support]
[not loaded] com.teamviewer.teamviewer.plist [Click for support]
[not loaded] com.teamviewer.teamviewer_desktop.plist [Click for support]
[running] com.wacom.pentablet.plist [Click for support]
[running] syncmateStarter.plist [Click for support]
Launch Daemons:

[loaded] com.adobe.fpsaud.plist [Click for support]
[loaded] com.delantis.tcbblocknke_load_kext.plist [Click for support]
[loaded] com.quark.quarkupdate.plist [Click for support]
[loaded] com.sharpcast.xfsmond.plist [Click for support]
[running] com.taoeffect.ispyd.plist [Click for support]
[loaded] com.teamviewer.Helper.plist [Click for support]
[not loaded] com.teamviewer.teamviewer_service.plist [Click for support]
[running] com.tobit.rfx-server.plist [Click for support]
[running] com.zeobit.MacKeeper.plugin.AntiTheft.daemon.plist [Click for support]
[loaded] de.meilenstein.MSTFirstRunInstaller.plist [Click for support]
[loaded] de.meilenstein.MSTHostPreferences.plist [Click for support]
[running] rapiback.plist [Click for support]
User Launch Agents:

[loaded] com.google.keystone.agent.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist [Click for support]
[loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist [Click for support]
[not loaded] com.taoeffect.EspionageHelper.plist [Click for support]
[failed] com.zeobit.MacKeeper.Helper.plist [Click for support] [Click for details]
[failed] de.phase6.reminder.agent.plist [Click for support] [Click for details]
[loaded] uk.co.markallan.clamxav.freshclam.plist [Click for support]
User Login Items:

Dropbox Programm (/Applications/Dropbox.app)
owncloud Programm (/Applications/owncloud.app)
ClamXavSentry Programm (/Applications/ClamXav.app/Contents/Resources/ClamXavSentry.app)
SpeechSynthesisServer Programm (/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/SpeechSynthesisServer.app)
BambooCore UNKNOWN (missing value)
Internet Plug-ins:

Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 [Click for support]
FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
Default Browser: Version: 600 - SDK 10.10
QuickTime Plugin: Version: 7.7.3
OfficeLiveBrowserPlugin: Version: 12.3.6 [Click for support]
Silverlight: Version: 4.0.51204.0 [Click for support]
WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.6 - SDK 10.9 [Click for support]
iPhotoPhotocast: Version: 7.0 - SDK 10.8
User internet Plug-ins:

CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Click for support]
Google Earth Web Plug-in: Version: 7.1 [Click for support]
Safari Extensions:

Ghostery
Twitter Disconnect
MetaGer Websuche
Incognito
Google Disconnect
Facebook Disconnect
AdBlock
Shortly
3rd Party Preference Panes:

Flash Player [Click for support]
Flip4Mac WMV [Click for support]
MacFUSE [Click for support]
Quark Update Preferences [Click for support]
TCPBlock [Click for support]
PenTablet [Click for support]
Time Machine:

Skip System Files: NO
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 499.05 GB Disk used: 345.10 GB
Destinations:
Backup1 [Local]
Total size: 2.00 TB
Total number of backups: 37
Oldest backup: 2014-01-07 11:35:30 +0000
Last backup: 2015-03-29 16:53:39 +0000
Size of backup disk: Excellent
Backup size 2.00 TB > (Disk size 499.05 GB X 3)
Dad [Network]
Total size: 3.00 TB
Total number of backups: 46
Oldest backup: 2014-11-15 19:40:13 +0000
Last backup: 2015-04-08 15:06:54 +0000
Size of backup disk: Excellent
Backup size 3.00 TB > (Disk size 499.05 GB X 3)
Top Processes by CPU:

8% WindowServer
2% firefox
2% plugin-container
0% fontd
0% Microsoft Word
Top Processes by Memory:

722 MB firefox
447 MB softwareupdated
309 MB clamd
292 MB Safari
223 MB Microsoft Word
Virtual Memory Information:

6.52 GB Free RAM
7.65 GB Active RAM
1.37 GB Inactive RAM
1.63 GB Wired RAM
7.15 GB Page-ins
0 B Page-outs
Diagnostics Information:

Apr 5, 2015, 11:10:30 PM Self test - passed