2. Go into your homedirectory/Library/Internet Plug-Ins and remove (you can move it all to your desktop or another folder) everything.
3. Delete the "com.apple.Safari.plist" and "com.apple.Safari.RSS.plist" files in your homedirectory/Library/Preferences folder.
4. Run OnyX and clear ALL caches (System, Fonts, User, etc.). Note, in each tab, execute the command. When it finished in that tab, it will ask you to reboot. Say NO. Go on to the next tab and repeat until all tabs are done. THEN REBOOT.