Mac Continues to Freeze during Operation

Question

I have been having serious issues with my Mac freezing for some time now.  I was hoping that upgrading to Yosemite would correct these issues; however, I am encountering the same issues again.  I ran a report using EtreCheck.  Could someone please take a look at the results below and help me determine if any of this could be causing the issue?  Thank you.EtreCheck version: 2.1.8 (121)Report generated March 1, 2015 at 8:41:01 AM ESTDownload EtreCheck from http://etresoft.com/etrecheckClick the [Click for support] links for help with non-Apple products.Click the [Click for details] links for more information about that line.Hardware Information: ℹ️    iMac (20-inch, Mid 2007) (Verified)    iMac - model: iMac7,1    1 2 GHz Intel Core 2 Duo CPU: 2-core    4 GB RAM Upgradeable        BANK 0/DIMM0            2 GB DDR2 SDRAM 667 MHz ok        BANK 1/DIMM1            2 GB DDR2 SDRAM 667 MHz ok    Bluetooth: Old - Handoff/Airdrop2 not supported    Wireless:  en1: 802.11 a/b/g/nVideo Information: ℹ️    ATI,RadeonHD2400 - VRAM: 128 MB        iMac 1680 x 1050System Software: ℹ️    OS X 10.10.2 (14C109) - Time since boot: 0:16:28Disk Information: ℹ️    ST3250820AS Q disk0 : (250.06 GB)        EFI (disk0s1) &lt;not mounted&gt; : 210 MB         [redacted] HD (disk0s2) / : 249.20 GB (150.00 GB free)        Recovery HD (disk0s3) &lt;not mounted&gt;  [Recovery]: 650 MB USB Information: ℹ️    Apple Inc. Built-in iSight     Apple, Inc. Keyboard Hub         Apple, Inc Apple Keyboard     Apple Inc. Bluetooth USB Host Controller     Logitech USB Receiver     Apple Computer, Inc. IR Receiver Gatekeeper: ℹ️    Mac App Store and identified developersKernel Extensions: ℹ️        /Library/Application Support/Avast/components/fileshield/unsigned    [loaded]    com.avast.AvastFileShield (2.1.0 - SDK 10.9) [Click for support]        /Library/Application Support/Avast/components/proxy/unsigned    [loaded]    com.avast.PacketForwarder (2.0 - SDK 10.9) [Click for support]        /System/Library/Extensions    [not loaded]    com.sandisk.driver.com_sandisk_SanDiskImageMate (1.0.17) [Click for support]Startup Items: ℹ️    HP IO: Path: /Library/StartupItems/HP IO    Startup items are obsolete in OS X YosemiteLaunch Agents: ℹ️    [running]    com.avast.update-agent.plist [Click for support]    [loaded]    com.avast.userinit.plist [Click for support]    [running]    com.sandisk.SanDiskImageMate.plist [Click for support]    [running]    com.sony.PMBPortable.AutoRun.plist [Click for support]Launch Daemons: ℹ️    [loaded]    com.adobe.fpsaud.plist [Click for support]    [loaded]    com.avast.init.plist [Click for support]    [loaded]    com.avast.uninstall.plist [Click for support]    [loaded]    com.avast.update.plist [Click for support]User Launch Agents: ℹ️    [loaded]    com.avast.home.userinit.plist [Click for support]User Login Items: ℹ️    iTunesHelper    UNKNOWN  (missing value)    Microsoft AU Daemon    UNKNOWN  (missing value)    Safari    Application  (/Applications/Safari.app)    HP Scheduler    Application  (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)Internet Plug-ins: ℹ️    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]    NPRoblox: Version: 1.0.2.10 [Click for support]    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]    QuickTime Plugin: Version: 7.7.3    Default Browser: Version: 600 - SDK 10.10    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]    iPhotoPhotocast: Version: 7.0Safari Extensions: ℹ️    Avast Online Security3rd Party Preference Panes: ℹ️    Flash Player  [Click for support]Time Machine: ℹ️    Skip System Files: NO    Mobile backups: OFF    Auto backup: YES    Volumes being backed up:        Macintosh HD: Disk size: 249.20 GB Disk used: 99.20 GB    Destinations:        My Passport [Local]         Total size: 499.94 GB         Total number of backups: 13         Oldest backup: 2012-05-01 03:01:28 +0000         Last backup: 2014-12-18 23:39:03 +0000         Size of backup disk: Adequate            Backup size 499.94 GB &gt; (Disk used 99.20 GB X 3)Top Processes by CPU: ℹ️         2%    WindowServer         0%    com.avast.daemon         0%    fontd         0%    com.avast.service         0%    AppleSpellTop Processes by Memory: ℹ️    146 MB    com.avast.daemon    129 MB    Safari    69 MB    ocspd    60 MB    softwareupdated    47 MB    WindowServerVirtual Memory Information: ℹ️    1.25 GB    Free RAM    1.44 GB    Active RAM    1.09 GB    Inactive RAM    518 MB    Wired RAM    1.66 GB    Page-ins    0 B    Page-outsDiagnostics Information: ℹ️    Mar 1, 2015, 08:22:58 AM    Self test - passed    Feb 28, 2015, 08:56:34 AM    /Library/Logs/DiagnosticReports/LegacyFileVaultMessageTracer_2015-02-28-085634_ [redacted].crash    Feb 27, 2015, 04:10:03 PM    /Library/Logs/DiagnosticReports/com.avast.daemon_2015-02-27-161003_[redacted].c pu_resource.diag [Click for details]

John Galt · Answer

The behaviour you describe is normal for Avast. If you want your Mac to work as it&#x27;s designed to work, uninstall it.As horrendous a product as Avast is, its uninstaller is a model of perfection. Use it. Don&#x27;t use any other technique to get rid of it.