Since installing Maverick my Mac Pro freezes at least once a day, any advice?.

Question

Since installing OS Maverick my Mac Pro is freezing at least once a day. I can not access 'Force Quit' via shortcut and have to force a shutdown. This has occured when using Firefox, so i tried Safari and Chrome, freezes using all three. It has happened while use software as well eg, Photoshop and Word.
I have installed and run AVG Anti Virus and done a full system check to ensure that there was no virus etc.... all was clear.
I am assuming that it is a bug within Maverick as i experienced none of these problems prior to its installation.
Is anyone else experiencing these issues and does anyone have any advice on prevention?

Answer 1

Firstly, uninstall any anti-malware software. It isn't needed and could cause your problem. Also, avoid using Chrome which can also cause problems. Never use more than one browser at a time. Using three is asking for disaster.
I've been using Mavericks on all my computers and have had no problems, so what you describe is unlikely to be a bug. Start by uninstalling the AV software using their uninstaller. Disconnect all third-party peripherals. Then try the following:
Fixing a Mavericks Installation Problem
How to manage a failed OS X Mavericks installation | MacFixIt - CNET Reviews.
Try these in order:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
     Boot to the Recovery HD: Restart the computer and after the chime press and hold down the
     COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the computer and
     after the chime press and hold down the OPTION key until the boot manager screen appears.
     Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Lion/Mountain Lion, Mavericks: Reboot from the Recovery HD. Select Reinstall Lion/Mountain Lion, Mavericks from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.