Firefox hangs a lot!!!

My Firefox hangs a lot when I open heavy graphic website. sometime it happens with the normal website with minimal graphic as well. I am using 20.0.1. I am planning to upgrade it to latest version but my belief is that the latest version won't work well in XP.
here is the list of installed addons:
copyallurls
copyurls
feedly
firebug
informEnter
rankchecker
roboform
searchstatus
seo for firefox
startaid
viewmarks
desabled addon
mozbar
seodocotr
skype click to call
I would agree that my browser usage is bit different than average user. Hence can you please suggest which older version should I use. or is there any way I can optimize firefox for optimum performance?
FYR.. my system RAM is only 1 GB.

Is there any way to keep those addons and make my firefox lighter by optimizing it?

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    Thank you. Here are the results from the software you recommended:
    Problem description:
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    EtreCheck version: 2.1.5 (108)
    Report generated January 2, 2015 at 1:57:25 PM CST
    Click the [Support] links for help with non-Apple products.
    Click the [Details] links for more information about that line.
    Click the [Adware] links for help removing adware.
    Hardware Information: ℹ️
        iMac (27-inch, Late 2012) (Verified)
        iMac - model: iMac13,2
        1 3.2 GHz Intel Core i5 CPU: 4-core
        16 GB RAM Upgradeable
            BANK 0/DIMM0
                8 GB DDR3 1600 MHz ok
            BANK 1/DIMM0
                8 GB DDR3 1600 MHz ok
            BANK 0/DIMM1
                empty empty empty empty
            BANK 1/DIMM1
                empty empty empty empty
        Bluetooth: Good - Handoff/Airdrop2 supported
        Wireless:  en1: 802.11 a/b/g/n
    Video Information: ℹ️
        NVIDIA GeForce GTX 675MX - VRAM: 1024 MB
            iMac 2560 x 1440
    System Software: ℹ️
        OS X 10.10.1 (14B25) - Uptime: 0:12:29
    Disk Information: ℹ️
        APPLE HDD ST3000DM001 disk0 : (3 TB)
            EFI (disk0s1) <not mounted> : 210 MB
            Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
            Macintosh HD (disk1) / : 3.00 TB (1.96 TB free) - 12 errors
                Core Storage: disk0s2 3.00 TB Online
    USB Information: ℹ️
        Brother HL-2270DW series
        Apple Inc. FaceTime HD Camera (Built-in)
        Apple, Inc. Keyboard Hub
            Apple Inc. Apple Keyboard
        Apple Inc. BRCM20702 Hub
            Apple Inc. Bluetooth USB Host Controller
    Thunderbolt Information: ℹ️
        Apple Inc. thunderbolt_bus
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        /etc/hosts - Count: 4
    Gatekeeper: ℹ️
        Mac App Store and identified developers
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            /Applications/DVD/Toast 11 Titanium/Spin Doctor.app
        [not loaded]    com.hzsystems.terminus.driver (4) [Support]
            /Applications/DVD/Toast 11 Titanium/Toast Titanium.app
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            /System/Library/Extensions
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        Jaksta: Path: /Library/StartupItems/Jaksta
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        [not loaded]    com.adobe.AAM.Updater-1.0.plist [Support]
        [loaded]    com.divx.dms.agent.plist [Support]
        [loaded]    com.divx.update.agent.plist [Support]
        [invalid?]    com.oracle.java.Java-Updater.plist [Support]
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        [running]    com.nalpeiron.netpro.plist [Support]
        [invalid?]    com.oracle.java.Helper-Tool.plist [Support]
        [loaded]    com.oracle.java.JavaUpdateHelper.plist [Support]
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        [running]    com.xrite.device.xrdd.plist [Support]
    User Launch Agents: ℹ️
        [loaded]    com.adobe.AAM.Updater-1.0.plist [Support]
        [loaded]    com.google.keystone.agent.plist [Support]
        [not loaded]    com.linotype.FontFolderProtector.plist [Support]
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        Dropbox    Application (/Applications/Utilities/Dropbox.app)
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        FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
        DivX Web Player: Version: 3.2.4.1250 - SDK 10.6 [Support]
        Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
        OVSHelper: Version: 1.1 [Support]
        Default Browser: Version: 600 - SDK 10.10
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        SharePointBrowserPlugin: Version: 14.0.0 [Support]
        GarminGpsControl: Version: 2.6.2.0 Release [Support]
        Silverlight: Version: 5.1.20913.0 - SDK 10.6 [Support]
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        Google Earth Web Plug-in: Version: 7.1 [Support]
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                        Macintosh HD (disk0s2) /: 499.25 GB (424.92 GB free)
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                     [failed] com.apple.afpstat.plist
                     [failed] com.apple.AirPlayUIAgent.plist
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                     [loaded] com.adobe.SwitchBoard.plist
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  • Firefox hangs at random times

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    GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
    Copyright (C) 2012 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
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    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0x8a6e0b40 (LWP 6975)]
    [Thread 0x8fafeb40 (LWP 6951) exited]
    [New Thread 0x8fafeb40 (LWP 6976)]
    [New Thread 0x886ffb40 (LWP 6977)]
    NOTE: child process received `Goodbye', closing down
    [Thread 0x8fafeb40 (LWP 6976) exited]
    [Thread 0x886ffb40 (LWP 6977) exited]
    [New Thread 0x873ffb40 (LWP 6991)]
    [New Thread 0x886ffb40 (LWP 6992)]
    [New Thread 0x8fafeb40 (LWP 6993)]
    [New Thread 0x86efeb40 (LWP 6994)]
    [New Thread 0x85affb40 (LWP 6997)]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [Thread 0x85affb40 (LWP 6997) exited]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0x85affb40 (LWP 7171)]
    [Thread 0xa08feb40 (LWP 6934) exited]
    [New Thread 0xa08feb40 (LWP 7172)]
    [Thread 0xa08feb40 (LWP 7172) exited]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0xa08feb40 (LWP 7210)]
    [New Thread 0x9067cb40 (LWP 7220)]
    [New Thread 0x9e0ccb40 (LWP 7222)]
    [New Thread 0x8ea6fb40 (LWP 7223)]
    [New Thread 0x898ffb40 (LWP 7224)]
    [New Thread 0x898aeb40 (LWP 7226)]
    [New Thread 0x8985db40 (LWP 7229)]
    [Thread 0x918ffb40 (LWP 7219) exited]
    [New Thread 0x918ffb40 (LWP 7251)]
    [New Thread 0x81fb0b40 (LWP 7684)]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [Thread 0x81fb0b40 (LWP 7684) exited]
    [Thread 0x85affb40 (LWP 7171) exited]
    [New Thread 0x85affb40 (LWP 7708)]
    [Thread 0x85affb40 (LWP 7708) exited]
    [New Thread 0x85affb40 (LWP 7714)]
    [New Thread 0x81fb0b40 (LWP 7724)]
    [New Thread 0x8138ab40 (LWP 7729)]
    [Thread 0x81fb0b40 (LWP 7728) exited]
    [New Thread 0x81fb0b40 (LWP 7734)]
    [Thread 0x81fb0b40 (LWP 7734) exited]
    [New Thread 0x81fb0b40 (LWP 7735)]
    [Thread 0x80b89b40 (LWP 7740) exited]
    [New Thread 0x81fb0b40 (LWP 7744)]
    [New Thread 0x80b89b40 (LWP 7745)]
    [Thread 0x80b89b40 (LWP 7751) exited]
    [New Thread 0x80b89b40 (LWP 7753)]
    [New Thread 0x706ffb40 (LWP 7754)]
    [New Thread 0x85affb40 (LWP 7846)]
    NOTE: child process received `Goodbye', closing down
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [Thread 0x706ffb40 (LWP 7844) exited]
    [Thread 0x85affb40 (LWP 7846) exited]
    [Thread 0x80b89b40 (LWP 7845) exited]
    [New Thread 0x80b89b40 (LWP 7911)]
    [Thread 0x80b89b40 (LWP 7911) exited]
    [New Thread 0x80b89b40 (LWP 7912)]
    [New Thread 0x85affb40 (LWP 7913)]
    [Thread 0x85affb40 (LWP 7913) exited]
    [Thread 0x80b89b40 (LWP 7912) exited]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0x80b89b40 (LWP 7917)]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0x85affb40 (LWP 7954)]
    [Thread 0x85affb40 (LWP 7954) exited]
    Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
    [New Thread 0x85affb40 (LWP 7964)]
    [Thread 0x85affb40 (LWP 7964) exited]
    [Thread 0x80b89b40 (LWP 7917) exited]
    [New Thread 0x80b89b40 (LWP 8013)]
    [New Thread 0x85affb40 (LWP 8014)]
    [New Thread 0x706ffb40 (LWP 8015)]
    [Thread 0x706ffb40 (LWP 8015) exited]
    [Thread 0x80b89b40 (LWP 8013) exited]
    [Thread 0x85affb40 (LWP 8014) exited]
    [New Thread 0x85affb40 (LWP 8016)]
    [Thread 0x85affb40 (LWP 8016) exited]
    [New Thread 0x85affb40 (LWP 8018)]
    [New Thread 0x80b89b40 (LWP 8019)]
    [New Thread 0x706ffb40 (LWP 8020)]
    [Thread 0x80b89b40 (LWP 8019) exited]
    [Thread 0x706ffb40 (LWP 8020) exited]
    [Thread 0x85affb40 (LWP 8018) exited]
    NOTE: child process received `Goodbye', closing down
    [Thread 0x81fb0b40 (LWP 7755) exited]
    [New Thread 0x81fb0b40 (LWP 8062)]
    [New Thread 0x81fb0b40 (LWP 8114)]
    [New Thread 0x81fb0b40 (LWP 8151)]
    [Thread 0x81fb0b40 (LWP 8151) exited]
    NOTE: child process received `Goodbye', closing down
    [Thread 0x85affb40 (LWP 8123) exited]
    [New Thread 0x85affb40 (LWP 8158)]
    [New Thread 0x81fb0b40 (LWP 8159)]
    [Thread 0xa00fdb40 (LWP 8113) exited]
    [Thread 0x81fb0b40 (LWP 8159) exited]
    [Thread 0x85affb40 (LWP 8158) exited]
    [New Thread 0x85affb40 (LWP 8167)]
    [New Thread 0x81fb0b40 (LWP 8172)]
    [Thread 0x81fb0b40 (LWP 8172) exited]
    NOTE: child process received `Goodbye', closing down
    [New Thread 0x81fb0b40 (LWP 8175)]
    [New Thread 0xa00fdb40 (LWP 8176)]
    [Thread 0xa00fdb40 (LWP 8176) exited]
    [Thread 0x81fb0b40 (LWP 8175) exited]
    [Thread 0xa08feb40 (LWP 7210) exited]
    [New Thread 0xa00fdb40 (LWP 8190)]
    [New Thread 0xa08feb40 (LWP 8191)]
    [Thread 0x85affb40 (LWP 8167) exited]
    NOTE: child process received `Goodbye', closing down
    [New Thread 0x85affb40 (LWP 8614)]
    [Thread 0x85affb40 (LWP 8614) exited]
    [New Thread 0x85affb40 (LWP 8618)]
    [Thread 0x85affb40 (LWP 8618) exited]
    [New Thread 0x85affb40 (LWP 8619)]
    [Thread 0x85affb40 (LWP 8619) exited]
    [Thread 0x90efeb40 (LWP 6949) exited]
    [Thread 0xa00fdb40 (LWP 8190) exited]
    [New Thread 0xa00fdb40 (LWP 8621)]
    [New Thread 0x90efeb40 (LWP 8622)]
    [New Thread 0x85affb40 (LWP 8623)]
    [New Thread 0x81fb0b40 (LWP 8624)]
    [New Thread 0x6faffb40 (LWP 8626)]
    [Thread 0x6faffb40 (LWP 8626) exited]
    [New Thread 0x699ffb40 (LWP 8627)]
    [Thread 0x699ffb40 (LWP 8627) exited]
    [Thread 0x916ffb40 (LWP 8112) exited]
    [Thread 0x90efeb40 (LWP 8622) exited]
    [Thread 0x81fb0b40 (LWP 8624) exited]
    [New Thread 0x81fb0b40 (LWP 8629)]
    [Thread 0x81fb0b40 (LWP 8629) exited]
    [New Thread 0x81fb0b40 (LWP 8634)]
    [New Thread 0x90efeb40 (LWP 8635)]
    [Thread 0x90efeb40 (LWP 8635) exited]
    [New Thread 0x90efeb40 (LWP 8643)]
    [New Thread 0x916ffb40 (LWP 8662)]
    (firefox:6918): libnotify-WARNING **: Failed to connect to proxy
    [New Thread 0x699ffb40 (LWP 8663)]
    [Thread 0x699ffb40 (LWP 8663) exited]
    [Thread 0xa00fdb40 (LWP 8621) exited]
    [New Thread 0xa00fdb40 (LWP 8702)]
    [New Thread 0x699ffb40 (LWP 8703)]
    [Thread 0x699ffb40 (LWP 8703) exited]
    NOTE: child process received `Goodbye', closing down
    [Thread 0xa00fdb40 (LWP 8702) exited]
    [New Thread 0xa00fdb40 (LWP 8737)]
    [New Thread 0x699ffb40 (LWP 8738)]
    [Thread 0x699ffb40 (LWP 8738) exited]
    [New Thread 0x699ffb40 (LWP 8739)]
    [Thread 0x699ffb40 (LWP 8739) exited]
    [Thread 0xa00fdb40 (LWP 8737) exited]
    [Thread 0x81fb0b40 (LWP 8634) exited]
    [New Thread 0x81fb0b40 (LWP 8787)]
    [Thread 0x81fb0b40 (LWP 8787) exited]
    [New Thread 0x81fb0b40 (LWP 8790)]
    [New Thread 0xa00fdb40 (LWP 8791)]
    [Thread 0x81fb0b40 (LWP 8790) exited]
    [New Thread 0x81fb0b40 (LWP 8792)]
    [New Thread 0x699ffb40 (LWP 8793)]
    [New Thread 0x68fffb40 (LWP 8807)]
    [Thread 0x68fffb40 (LWP 8807) exited]
    [Thread 0x699ffb40 (LWP 8793) exited]
    NOTE: child process received `Goodbye', closing down
    [New Thread 0x68fffb40 (LWP 8815)]
    [New Thread 0x699ffb40 (LWP 8816)]
    NOTE: child process received `Goodbye', closing down
    Program received signal SIGPIPE, Broken pipe.
    [Switching to Thread 0xb26ffb40 (LWP 6924)]
    0xb7fdd424 in __kernel_vsyscall ()
    (gdb) </nowiki></pre>

    The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
    Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
    To Reset Firefox do the following:
    #Go to Firefox > Help > Troubleshooting Information.
    #Click the "Reset Firefox" button.
    #Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
    #Firefox will open with all factory defaults applied.
    Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
    Did this fix your problems? Please report back to us!

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