Problem viewing YouTube Videos

Question

All of a sudden I'm having difficulties viewing videos on YouTube in particular. Video takes too long to load, frames are jerky, counter keeps going back and forth at the end of the video. Moreover, my Mac is very slow during the process and almost crashes if I try to maximize or minimize window, or work with other applications. The rainbow disc is almost always there. This happens only on YouTube. Could anyone please help?
N.B. I tried uninstalling and re-installing Flash Player. I tried repairing permissions (as they said on a Mac forum). I tried emptying cache and resetting Safari. I tried using TimeMachine to restore to an earlier time. I tried using MacKeeper to empty some space on the memory. I tried opening Safari in 32 bit mode, but it made things worse (videos were cut down to a couple of seconds). Nothing seems to work.
My System:
MacBook Pro 13"
Processor 2.66 GHz
Memory 4 GB
Mac OS X 10.7.4
Safari 5.1.7

Answer 1

So, this is what I got:
step 1:
com.eltima.ElmediaPlayer.kext (1.0)
step 2:
Passowrd:
org.samba.smbd
org.samba.nmbd
com.eltima.ElmediaPlayer.daemon
step 3:
com.hp.launchurlagent
com.google.keystone.user.agent
step 4:
/Library/Address Book Plug-Ins:
/Library/Components:
/Library/Frameworks:
AECore.framework
Compressor.framework
DivX Toolkit.framework
FxPlug.framework
HPDeviceModel.framework
HPPml.framework
HPServicesInterface.framework
HPSmartPrint.framework
MediaServerAPI.framework
Motion.framework
PluginManager.framework
ProFX.framework
ProMetadataSupport.framework
Qmaster.framework
/Library/Input Methods:
/Library/Internet Plug-Ins:
AdobePDFViewer.plugin
ContentUploaderPlugin.plugin
DRM Plugin.bundle
Disabled Plug-Ins
DivXBrowserPlugin.plugin
Flash Player.plugin
Flip4Mac WMV Plugin.plugin
Flip4Mac WMV Plugin.webplugin
Google Earth Web Plug-in.plugin
JavaPluginCocoa.bundle
Musicnotes.plugin
NP-PPC-Dir-Shockwave
Quartz Composer.webplugin
QuickTime Plugin.plugin
QuickTime Plugin.webplugin
RealPlayer Plugin.plugin
Scorch.plugin
VerifiedDownloadPlugin.plugin
Windows Media Plugin
flashplayer.xpt
iPhotoPhotocast.plugin
npUpload.xpt
npdivx.xpt
nsIQTScriptablePlugin.xpt
/Library/Internet Plug-Ins (Disabled):
Flash Player.plugin
/Library/Keyboard Layouts:
/Library/LaunchAgents:
com.hp.launchurlagent.plist
/Library/LaunchDaemons:
com.eltima.ElmediaPlayer.daemon.plist
/Library/PreferencePanes:
Apple Qmaster.prefPane
DivX.prefPane
Flash Player.prefPane
Flip4Mac WMV.prefPane
/Library/QuickLook:
iWork.qlgenerator
/Library/QuickTime:
.DS_Store
AppleHDVCodec.component
AppleIntermediateCodec.component
AppleProRes422.component
DVCPROHDCodec.component
DVCPROHDMuxer.component
DVCPROHDVideoDigitizer.component
DVCPROHDVideoOutput.component
DVCPROHDVideoOutputClock.component
DVCPROHDVideoOutputCodec.component
DesktopVideoOut.component
DivX Decoder.component
DivX Encoder.component
FCP Uncompressed 422.component
Flip4Mac WMV Export.component
Flip4Mac WMV Import.component
IMXCodec.component
LiveType.component
Motion.component
nsTODimporter.component
/Library/ScriptingAdditions:
Adobe Unit Types
/Library/Spotlight:
AppleWorks.mdimporter
LogicPro.mdimporter
Microsoft Entourage.mdimporter
Microsoft Office.mdimporter
iMovie.mdimporter
iWeb.mdimporter
iWork.mdimporter
/Library/StartupItems:
Qmaster
/etc/mach_init.d:
dashboardadvisoryd.plist
/etc/mach_init_per_login_session.d:
/etc/mach_init_per_user.d:
RemoteUI.plist
Library/Address Book Plug-Ins:
AdiumAddressBookAction_AIM.scpt
AdiumAddressBookAction_ICQ.scpt
AdiumAddressBookAction_Jabber.scpt
AdiumAddressBookAction_MSN.scpt
AdiumAddressBookAction_SMS.scpt
AdiumAddressBookAction_Yahoo.scpt
SkypeABDialer.bundle
SkypeABSMS.bundle
Library/Fonts:
Abadi MT Condensed Extra Bold
Abadi MT Condensed Light
Andale Mono
Arial
Arial Black
Arial Narrow
Arial Rounded Bold
Baskerville Old Face
Batang.ttf
Bauhaus 93
Bell MT
Bernard MT Condensed
Book Antiqua
Bookman Old Style
Braggadocio
Britannic Bold
Brush Script
Calisto MT
Century
Century Gothic
Century Schoolbook
Colonna
Comic Sans MS
Cooper Black
Copperplate Gothic Bold
Copperplate Gothic Light
Curlz MT
Desdemona
Edwardian Script ITC
Engravers MT
Eurostile
Footlight Light
Garamond
Georgia
Gill Sans Ultra Bold
Gloucester MT Extra Condensed
Goudy Old Style
Gulim.ttf
Haettenschweiler
Harrington
Impact
Imprint MT Shadow
Kino
Lucida Blackletter
Lucida Bright
Lucida Calligraphy
Lucida Fax
Lucida Handwriting
Lucida Sans
Lucida Sans Typewriter
MS Gothic.ttf
MS Mincho.ttf
MS PGothic.ttf
MS PMincho.ttf
MT Extra
Matura Script Capitals
Mistral
Modern No. 20
Monotype Corsiva
Monotype Sorts
News Gothic MT
Onyx
PMingLiU.ttf
Perpetua Titling MT
Playbill
Rockwell
Rockwell Extra Bold
SimSun.ttf
Stencil
Tahoma
Times New Roman
Trebuchet MS
Verdana
Wide Latin
Wingdings
Wingdings 2
Wingdings 3
Library/Frameworks:
Library/Input Methods:
.localized
Library/InputManagers:
Library/Internet Plug-Ins:
Library/Keyboard Layouts:
Library/LaunchAgents:
com.apple.FolderActions.enabled.plist
com.apple.FolderActions.folders.plist
com.google.keystone.agent.plist
Library/PreferencePanes:
Opera Preferences
Perian.prefPane
Library/QuickTime:
AC3MovieImport.component
Perian.component
Library/ScriptingAdditions:
step 5:
iTunesHelper, Safari
So, thats what I got after each step...
I appreciate any help