Mac is way too slow and bouncing ball is constant

Question

I ran the etrecheck and this is what it came back with.  What should I do?
Problem description:
Bouncing ball all the time…computer super slow.
EtreCheck version: 2.1.7 (114)
Report generated January 31, 2015 at 5:37:13 PM PST
Download EtreCheck from http://etresoft.com/etrecheck
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
    MacBook Pro (15-inch, Early 2011) (Technical Specifications)
    MacBook Pro - model: MacBookPro8,2
    1 2 GHz Intel Core i7 CPU: 4-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1333 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless:  en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 263
Video Information: ℹ️
    Intel HD Graphics 3000 - VRAM: 384 MB
    AMD Radeon HD 6490M - VRAM: 256 MB
        Color LCD 1440 x 900
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:13:39
Disk Information: ℹ️
    ST9500325ASG disk0 : (500.11 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
        Macintosh HD (disk1) / : 498.88 GB (235.63 GB free)
            Core Storage: disk0s2 499.25 GB Online
    HL-DT-ST DVDRW  GS23NR 
USB Information: ℹ️
    Apple Inc. FaceTime HD Camera (Built-in)
    HP Photosmart Plus B210 series
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Inc. BRCM2070 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [loaded]    com.LaCie.ScsiType00 (1.2.9 - SDK 10.6) [Support]
    [loaded]    com.jmicron.driver.jmPeripheralDevice (2.0.4) [Support]
    [not loaded]    com.kaspersky.kext.klif (3.0.0d23) [Support]
    [loaded]    com.kaspersky.nke (1.0.2d43) [Support]
    [loaded]    com.lacie.driver.LaCie_RemoteComms (1.0.1 - SDK 10.4) [Support]
    [loaded]    com.oxsemi.driver.OxsemiDeviceType00 (1.28.13 - SDK 10.5) [Support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Support]
    [running]    com.fitbit.galileod.plist [Support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.ARM.[...].plist [Support]
User Login Items: ℹ️
    iTunesHelper    Application Hidden (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ℹ️
    FlashPlayer-10.6: Version: 16.0.0.296 - SDK 10.6 [Support]
    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 16.0.0.296 - SDK 10.6 [Support]
    Default Browser: Version: 600 - SDK 10.10
    SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 [Support]
    Silverlight: Version: 5.1.20913.0 - SDK 10.6 [Support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Safari Extensions: ℹ️
    Pin It Button [Installed]
3rd Party Preference Panes: ℹ️
    Flash Player  [Support]
Time Machine: ℹ️
    Skip System Files: NO
    Mobile backups: ON
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 498.88 GB Disk used: 263.25 GB
    Destinations:
        LaCie [Local]
        Total size: 499.76 GB
        Total number of backups: 11
        Oldest backup: 2013-04-08 05:32:50 +0000
        Last backup: 2014-12-29 20:32:29 +0000
        Size of backup disk: Too small
            Backup size 499.76 GB < (Disk used 263.25 GB X 3)
Top Processes by CPU: ℹ️
         5%    WindowServer
         0%    systemstatsd
         0%    HP Scanner 3
         0%    AppleSpell
         0%    fontd
Top Processes by Memory: ℹ️
    232 MB    Image Capture Extension
    159 MB    ocspd
    133 MB    Safari
    120 MB    com.apple.WebKit.WebContent
    94 MB    Dock
Virtual Memory Information: ℹ️
    40 MB    Free RAM
    1.56 GB    Active RAM
    1.53 GB    Inactive RAM
    1.14 GB    Wired RAM
    1.40 GB    Page-ins
    5 MB    Page-outs
Diagnostics Information: ℹ️
    Jan 31, 2015, 05:24:14 PM    Self test - passed

Answer 1

I can't stand peremptory affirmations like "Nothing is wrong with Safari".
Thousands of users can't be wrong (see the discussions).
If I read you the right way, it's never software' fault, it's the user who's the culprit.
Amazing!
In this very case, the fact is we can't give to "christinefromfonthill" a good solution because weren't sitting in front of her Mac.
You give her a good advice which could, perhaps, lead to an improvement.
But must also admit that Safari is a very slow browser compared to Firefox or Chrome.
And you can't ignore all the problems which arose when upgrading to Lion and were related to the new build and specs of Safari 5.1.
The best example is the apparition of "garbage type" (use of Last Resort font) when reading numerous sites. This never occured before and is the direct consequence of Safari compliance to Web Open Type. This standard prohibits the use of Type 1 Postscript Fonts and is the reason why so many people are in trouble.
I use a Mac for more than 25 years.
I am a very "clean" user who hates the bells and whistles of third party.
My Mac is always up-to-date and despite all my Mac loving care, I run into some problems.
Imagine the nightmare which can occurs for the vulgum pecus who isn't, by definition, a power user aware of all the requirements for running a System in optimal conditions.
May be Safari is one step in advance on its time but lambda users are paying the price for it.