Will it slow down Mac book aluminium with Mountain lion?

I m very interested with new os of Mountain Lion and i consider to upgrade it. But I really concren about will it slow down my current Mac Book Aluminium? As I have upgraded to 4GB RAM.

You'll need to wait until it's released for the various groups that benchmark new systems to run the comparison tests. Macworld.com is pretty good about that.

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    Sorry, no.

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  • Slow down mac book pro

    hello
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              MacBook Pro (13-inch, Mid 2009)
              MacBook Pro - model: MacBookPro5,5
              1 2.53 GHz Intel Core 2 Duo CPU: 2 cores
              4 GB RAM
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    System Software:
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    Disk Information:
              Hitachi HTS disk0 : (250,06 GB)
                        EFI (disk0s1) <not mounted>: 209,7 MB
                        Macintosh HD (disk0s2) /: 249,72 GB (74,51 GB free)
              HL-DT-ST DVDRW  GS23N 
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              Apple Inc. Built-in iSight
              Apple Internal Memory Card Reader
              Apple Inc. Apple Internal Keyboard / Trackpad
              Apple Computer, Inc. IR Receiver
              Apple Inc. BRCM2046 Hub
                        Apple Inc. Bluetooth USB Host Controller
    FireWire Information:
    Thunderbolt Information:
    Kernel Extensions:
              com.symantec.kext.internetSecurity          (5.3.1f8)
              com.symantec.kext.pf          (5.6.1f9)
              com.symantec.kext.ips          (3.9.1f9)
              com.symantec.kext.fw          (5.3.1f9)
              com.symantec.kext.SymAPComm          (12.6.1f9 - SDK 10.6)
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    Problem System Launch Agents:
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              [loaded] com.adobe.fpsaud.plist 3rd-Party support link
              [loaded] com.symantec.deepsight-extractor.plist 3rd-Party support link
              [loaded] com.symantec.errorreporter-periodic.plist 3rd-Party support link
              [loaded] com.symantec.liveupdate.daemon.ondemand.plist 3rd-Party support link
              [loaded] com.symantec.liveupdate.daemon.plist 3rd-Party support link
              [not loaded] com.symantec.nav.migrateqtf.plist 3rd-Party support link
              [loaded] com.symantec.sharedsettings.plist 3rd-Party support link
              [loaded] com.symantec.symdaemon.plist 3rd-Party support link
    Launch Agents:
              [loaded] com.symantec.errorreporter-periodicagent.plist 3rd-Party support link
              [loaded] com.symantec.nis.application.plist 3rd-Party support link
              [loaded] com.symantec.uiagent.application.plist 3rd-Party support link
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              iTunesHelper
    Internet Plug-ins:
              FlashPlayer-10.6: Version: 12.0.0.38 - SDK 10.6 3rd-Party support link
              QuickTime Plugin: Version: 7.7.3
              Flash Player: Version: 12.0.0.38 - SDK 10.6 3rd-Party support link
              Default Browser: Version: 537 - SDK 10.9
              OfficeLiveBrowserPlugin: Version: 12.3.6 3rd-Party support link
              NortonInternetSecurityBF: Version: 1.7.0 - SDK 10.6 3rd-Party support link
              Silverlight: Version: 5.1.20913.0 - SDK 10.6 3rd-Party support link
              iPhotoPhotocast: Version: 7.0 - SDK 10.8
    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
    3rd Party Preference Panes:
              Flash Player  3rd-Party support link
              Norton\nQuickMenu  3rd-Party support link
    Bad Fonts:
              None
    Old Applications:
              SLLauncher:          Version: 1.0 - SDK 10.5 3rd-Party support link
                        /Library/Application Support/Microsoft/Silverlight/OutOfBrowser/SLLauncher.app
              Microsoft AutoUpdate:          Version: 2.3.6 - SDK 10.4 3rd-Party support link
                        /Library/Application Support/Microsoft/MAU2.0/Microsoft AutoUpdate.app
    Time Machine:
              Time Machine not configured!
    Top Processes by CPU:
                   2%          EtreCheck
                   1%          mds_stores
                   1%          WindowServer
                   0%          SymDaemon
                   0%          Safari
    Top Processes by Memory:
              242 MB          SymDaemon
              221 MB          Mail
              86 MB          PluginProcess
              74 MB          mds_stores
              66 MB          Safari
    Virtual Memory Information:
              1.45 GB          Free RAM
              1.52 GB          Active RAM
              234 MB          Inactive RAM
              562 MB          Wired RAM
              408 MB          Page-ins
              0 B          Page-outs

    You need to get rid of Norton. It is notorious for causing problems on the Mac, and isn't much good at detecting Mac malware anyway. Uninstall it. To do that, you will need to run the installer again, which will offer to uninstall it since Norton is already installed. If you no longer have the installer, you will need to re-download it.
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    The OS X Mountain Lion I tried to download Wi-Fi on Mac Book Pro was not successfull. Should I buy it again? Should I check with Apple store for credit?
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    You should not have paid twice. If you logged into the App Store with the same AppleID as you used to purchase Mountain Lion the first time, you should not have been charged again.
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