Royally screwed up my startup disk... can anyone help?

I have been playing around a little too much with my new OSX to make it as efficient as possible. So, when I went to Disk Utility and saw "erase free space" on Harddrive. My brain (which is not as efficient nor as intelligent as my MAC brain) read it as "Erase all the junk I don't need and increase memory" So... I clicked and watched for over an hour as my computer erased all my zeroed out all my "free space". I'm not even sure why erasing free space is an option, but that is neither here nor there. Now I have a beautiful new Mac that runs as quickly as a 2GS. Not good........ Short of a complete re-installation, is there anything I can do to restore her back to the fantastic abilities she came with a week ago? Thank you!!!!!
~K

Hi K;
I agree with Hyphen that erasing free space should not have had that effect. We need to get to the bottom of this.
How much free space do you have available?
Do you have file vault turned on?
Allan

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gray screen at startup and crashes
EtreCheck version: 2.1.1 (104)
Report generated 6 de dezembro de 2014 13:29:43 BRST
Hardware Information: ℹ️
MacBook Pro (15-inch, Early 2011) (Verified)
MacBook Pro - model: MacBookPro8,2
1 2.2 GHz Intel Core i7 CPU: 4-core
4 GB RAM
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
AMD Radeon HD 6750M - VRAM: 1024 MB
Color LCD 1440 x 900
Intel HD Graphics 3000 - VRAM: 384 MB
System Software: ℹ️
Mac OS X 10.6.8 (10K549) - Uptime: 0:31:56
Disk Information: ℹ️
TOSHIBA MK7559GSXF disk0 : (698,64 GB)
S.M.A.R.T. Status: Verified
- (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 749.81 GB (378.70 GB free)
MATSHITADVD-R   UJ-898
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
Apple, Inc. MacBook Pro
Problem System Launch Daemons: ℹ️
[not loaded] org.samba.winbindd.plist [Support]
Launch Agents: ℹ️
[running] com.babylon.activation.plist [Support]
[loaded] com.divx.dms.agent.plist [Support]
[loaded] com.divx.update.agent.plist [Support]
[loaded] com.hp.help.tocgenerator.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
[loaded] com.facebook.videochat.[redacted].plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[running] com.skype.c2c_service.plist [Support]
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iTunesHelper UNKNOWNHidden (missing value)
FaceboxPro Aplicativo (/Applications/FaceboxPro.app)
Safari Aplicativo (/Applications/Safari.app)
Octoshape Aplicativo (/Users/[redacted]/Library/Octoshape/Octoshape.app)
uTorrent UNKNOWN (missing value)
Dropbox Aplicativo (/Applications/Dropbox.app)
Inkscape UNKNOWN (missing value)
RealPlayer Downloader Agent Aplicativo (/Users/[redacted]/Library/Application Support/RealNetworks/RealPlayer Downloader Agent.app)
HP Product Research Aplicativo (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
Internet Plug-ins: ℹ️
OVSHelper: Version: 1.1 [Support]
Google Earth Web Plug-in: Version: 7.1 [Support]
Flip4Mac WMV Plugin: Version: 2.4.4.2 [Support]
RealPlayer Plugin: Version: Unknown [Support]
AdobePDFViewerNPAPI: Version: 10.1.12 [Support]
FlashPlayer-10.6: Version: 15.0.0.239 - SDK 10.6 [Support]
DivX Web Player: Version: 3.1.1.9 - SDK 10.6 [Support]
Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Support]
Flash Player: Version: 15.0.0.239 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.6.6
iPhotoPhotocast: Version: 7.0 - SDK 10.7
SharePointBrowserPlugin: Version: 14.1.2 [Support]
AdobePDFViewer: Version: 10.1.12 [Support]
JavaAppletPlugin: Version: 13.9.8 - SDK 10.6 Check version
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npsf_uni: Version: sf 3.3.2.1 [Support]
OctoshapeWeb: Version: 1.0 - SDK 10.8 [Support]
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Searchme Adware! [Remove]
Skype Click to Call
iSkyDeluxe
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iSightAudio: Version: 7.6.6
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Flash Player [Support]
Flip4Mac WMV [Support]
Skype Click to Call [Support]
Tuxera NTFS [Support]
Time Machine: ℹ️
Time Machine information requires OS X 10.7 "Lion" or later.
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296 MB WebProcess
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185 MB Microsoft PowerPoint
163 MB Safari
137 MB Microsoft Word
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843 MB Free RAM
1.76 GB Active RAM
706 MB Inactive RAM
978 MB Wired RAM
577 MB Page-ins
0 B Page-outs
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Dec 6, 2014, 07:08:28 AM PluginProcess_2014-12-06-070828_MacBook-...crash
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