Help with slow running mac, common problem, new victim

Hi, I am having serious problems. MacBook Pro 17" was recently upgraded to 10.9, is PAINFULLY slow doing anything and everything. Not sure if the problem is caused by hardware or software. Below is the EtreCheck report. I would greatly appreciate any help.

Disk Information:

USB Information:

FireWire Information:

Thunderbolt Information:

Apple Inc. thunderbolt_bus

Kernel Extensions:

net.telestream.driver.TelestreamAudio (1.1.0 - SDK 10.8)

com.sophos.kext.sav (8.0.14)

com.bresink.driver.BRESINKx86Monitoring (8.0)

Startup Items:

BRESINKx86Monitoring: Path: /Library/StartupItems/BRESINKx86Monitoring

HP IO: Path: /Library/StartupItems/HP IO

Launch Daemons:

[System] com.adobe.fpsaud.plist 3rd-Party support link

[System] com.bombich.ccc.plist 3rd-Party support link

[System] com.cocoatech.pathfinder.SMFHelper.plist 3rd-Party support link

[System] com.livescribe.PenCommService.plist 3rd-Party support link

[System] com.microsoft.office.licensing.helper.plist 3rd-Party support link

[System] com.oracle.java.Helper-Tool.plist 3rd-Party support link

[System] com.sharpcast.xfsmond.plist 3rd-Party support link

[System] com.sophos.autoupdate.plist 3rd-Party support link

[System] com.sophos.intercheck.plist 3rd-Party support link

[System] com.sophos.notification.plist 3rd-Party support link

Launch Agents:

[System] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link

[System] com.hp.messagecenter.launcher.plist 3rd-Party support link

[System] com.maintain.CocktailSystemEvents.plist 3rd-Party support link

[System] com.oracle.java.Java-Updater.plist 3rd-Party support link

[System] com.sophos.uiserver.plist 3rd-Party support link

User Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link

[not loaded] com.adobe.ARM.[...].plist 3rd-Party support link

[not loaded] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist

[not loaded] com.google.GoogleContactSyncAgent.plist 3rd-Party support link

[not loaded] com.google.keystone.agent.plist 3rd-Party support link

User Login Items:

None

Internet Plug-ins:

OVSHelper: Version: 1.0 3rd-Party support link

Default Browser: Version: 537 - SDK 10.9

AmazonMP3DownloaderPlugin1017265: Version: AmazonMP3DownloaderPlugin 1.0.17 3rd-Party support link

OfficeLiveBrowserPlugin: Version: 12.3.6 3rd-Party support link

SlingPlayer: Version: (null) 3rd-Party support link

AdobePDFViewerNPAPI: Version: 10.1.8 3rd-Party support link

FlashPlayer-10.6: Version: 11.9.900.117 - SDK 10.6 3rd-Party support link

Silverlight: Version: 5.1.10411.0 - SDK 10.6 3rd-Party support link

Flash Player: Version: 11.9.900.117 - SDK 10.6 Outdated! Update

AmazonMP3DownloaderPlugin: Version: AmazonMP3DownloaderPlugin 1.0.17 3rd-Party support link

iPhotoPhotocast: Version: 7.0 - SDK 10.8

QuickTime Plugin: Version: 7.7.3

AdobePDFViewer: Version: 10.1.8 3rd-Party support link

GarminGpsControl: Version: 4.0.4.0 Release - SDK 10.6 3rd-Party support link

SharePointBrowserPlugin: Version: 14.3.8 - SDK 10.6 3rd-Party support link

JavaAppletPlugin: Version: Java 7 Update 45 Outdated! Update

Safari Extensions:

Open in Internet Explorer: Version: 1.0

DivX HiQ: Version: 2.1.1.94

DivX Plus Web Player HTML5 <video>: Version: 2.1.1.94

Audio Plug-ins:

BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9

AirPlay: Version: 1.9 - SDK 10.9

AppleAVBAudio: Version: 2.0.0 - SDK 10.9

iSightAudio: Version: 7.7.3 - SDK 10.9

iTunes Plug-ins:

Quartz Composer Visualizer: Version: 1.4 - SDK 10.9

User Internet Plug-ins:

RealPlayer Plugin: Version: (null) 3rd-Party support link

Old Applications:

None

Time Machine:

Time Machine not configured!

Top Processes by CPU:

6% ReportCrash

3% InterCheck

3% MailTab for Gmail

3% WindowServer

1% SophosAutoUpdate

Top Processes by Memory:

0 B aosnotifyd

0 B opendirectoryd

0 B CloudKeychainProxy

0 B com.apple.AppSandboxSMLoginItemEnabler

0 B pbs

Virtual Memory Information:

556 MB Free RAM

3.43 GB Active RAM

2.77 GB Inactive RAM

1.24 GB Wired RAM

3.32 GB Page-ins

0 B Page-outs

From About this mac and Disk Utility:

MacBook Pro 17-inch, Early 2011

Model Identifier: MacBookPro8,3

OS X version 10.9 (13A603)

Processor 2.3 GHz Intel Core i7

Memory 8 GB 1333 MHX DDR3

Graphics Intel HD Graphics 3000 512 MB

Boot ROM Version MBP81.0047.B27

SMC Version (System) 1.70f6

750.16 GB Toshiba MK7559GSXF Media

Connection Bus: SATA

S.M.A.R.T. Status: Verified

Partition Map Scheme: GUID Partition Table

Macintosh HD:

Mount Point: /

Capacity: 759.3 GB

Available: 322.9 GB

Used: 426.39 GB

Format: Mac OS Extended (Journaled)

Number of folders: 186,787

Number of files: 1,250,128

For what it's worth, the disk doesn't seem to be unusually slow when I start in target mode.

Also, starting using Control-R and running disk utility, I get the following message:

"Problems were found with the partition map which might prevent booting"

"The partition map needs to be repaired because there's a problem with the EFI system partition's file system."

But could not repair because "Live file system repair is not supported". I also have access to Disk Warrior and TechTool, if those would be useful (tried to rebuild the directory with Disk Warrior but it did not help). Starting in Target mode and running disk utility from a second computer detected no problems on this hard drive!

Thank you