I have a MacBook Pro running 10.6.8 which has suddenly began running terribly slow

Question

I was using AIM messenger and either looking up something on Facebook or YouTube when my computer froze.
It took a couple of minutes to respond again but I noticed that it continually lagged and kept freezing if I kept trying to do multiple things at once.
I thought restarting my computer would be a good idea, see if that would help & that's where I noticed the biggest difference.
My computer can generally be turned on and fully logged-in within 1 minute, but it now takes me up to 12 minutes to do the same process. Once I have turned the computer on, it will take the most time to just get to the log-in screen, after I have entered my password, it is fairly quick.
Once logged-in my computer is running a little better, but still freezes for a small period of time before it all catches up very quickly.
Can anyone help?

Answer 1

Hi Melophage,
Sorry for the late reply, I've been offline for a little while.
These are the results, thank you for helping me!
Hardware Information:
          MacBook Pro (15-inch, Mid 2010)
          MacBook Pro - model: MacBookPro6,2
          1 2.53 GHz Intel Core i5 CPU: 2 cores
          4 GB RAM
Video Information:
          NVIDIA GeForce GT 330M - VRAM: 256 MB
          Intel HD Graphics - VRAM: 288 MB
System Software:
          Mac OS X 10.6.8 (10K549) - Uptime: 0 days 2:21:39
Disk Information:
          Hitachi HTS725050A9A362 disk0 : (465.76 GB)
                    (null) (disk0s1) <not mounted>: 200 MB
                    Macintosh HD (disk0s2) / [Startup]: 465.44 GB (336.02 GB free)
          MATSHITADVD-R   UJ-898 
USB Information:
          Apple Inc. BRCM2070 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Internal Memory Card Reader
          Apple Inc. Apple Internal Keyboard / Trackpad
          Suunto Movestick mini
          Apple Computer, Inc. IR Receiver
          Apple Inc. Built-in iSight
FireWire Information:
Thunderbolt Information:
Kernel Extensions:
          com.symantec.kext.internetSecurity          (1.3.2f5)
          com.symantec.kext.ips          (3.2f8)
          com.symantec.kext.pf          (4.1.1f13)
          com.symantec.kext.SymAPComm          (11.1.2f17)
          com.symantec.kext.filesecurity          (1.3.3f65)
          com.symantec.kext.fw          (1.0.3f5)
Startup Items:
          Jaksta: Path: /Library/StartupItems/Jaksta
Problem System Launch Daemons:
          [System] org.samba.winbindd.plist 3rd-Party support link
Launch Daemons:
          [System] com.adobe.fpsaud.plist 3rd-Party support link
          [System] com.microsoft.office.licensing.helper.plist 3rd-Party support link
          [System] com.symantec.avscandaemon.plist 3rd-Party support link
          [System] com.symantec.deepsight-extractor.plist 3rd-Party support link
          [System] com.symantec.diskMountNotify.plist 3rd-Party support link
          [System] com.symantec.MissedTasks.plist 3rd-Party support link
          [System] com.symantec.navapd.plist 3rd-Party support link
          [System] com.symantec.navapdaemonsl.plist 3rd-Party support link
          [System] com.symantec.Sched501-1.plist 3rd-Party support link
          [System] com.symantec.sharedsettings.plist 3rd-Party support link
          [System] com.symantec.symdaemon.plist 3rd-Party support link
          [System] com.symantec.symSchedDaemon.plist 3rd-Party support link
Launch Agents:
          [System] com.hp.messagecenter.launcher.plist 3rd-Party support link
          [System] com.symantec.uiagent.application.plist 3rd-Party support link
User Launch Agents:
          [not loaded] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist
          [not loaded] com.google.keystone.agent.plist 3rd-Party support link
User Login Items:
          SymSecondaryLaunch
Internet Plug-ins:
          Flip4Mac WMV Plugin: Version: 2.4.0.11 3rd-Party support link
          FlashPlayer-10.6: Version: 13.0.0.201 - SDK 10.6 3rd-Party support link
          JavaAppletPlugin: Version: 13.9.8 - SDK 10.6 Outdated! Update
          Flash Player: Version: 13.0.0.201 - SDK 10.6 3rd-Party support link
          QuickTime Plugin: Version: 7.6.6
          SharePointBrowserPlugin: Version: 14.4.1 - SDK 10.6 3rd-Party support link
          Google Earth Web Plug-in: Version: 6.2 3rd-Party support link
          Unity Web Player: Version: UnityPlayer version 3.4.0f5 - SDK 10.5 3rd-Party support link
          Silverlight: Version: 4.0.60831.0 3rd-Party support link
          iPhotoPhotocast: Version: 7.0 - SDK 10.7
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.2
3rd Party Preference Panes:
          Flash Player  3rd-Party support link
          Flip4Mac WMV  3rd-Party support link
          Growl  3rd-Party support link
          MacFUSE  3rd-Party support link
          Norton\nQuickMenu  3rd-Party support link
          Samsung NTFS-3G  3rd-Party support link
Old Applications:
          None
Time Machine:
          Time Machine information requires OS X 10.7 "Lion" or later.
Top Processes by CPU:
               3%          WindowServer
               2%          EtreCheck
               2%          Google Chrome
               1%          AIM
               0%          coreservicesd
Top Processes by Memory:
          668 MB          NortonAutoProtect
          147 MB          Google Chrome
          81 MB          Google Chrome Helper
          78 MB          WindowServer
          57 MB          Finder
Virtual Memory Information:
          1.28 GB          Free RAM
          1.51 GB          Active RAM
          512 MB          Inactive RAM
          597 MB          Wired RAM
          401.84 GB          Page-ins
          0 B          Page-outs