Everyone in this community volunteers his or her own time. Rude responses and pointless rants are likely to be ignored.
If you want competent assistance I suggest you ask for it politely.
Rather than ask a dozen different questions regarding your system, would you be willing to download and run a little utility that may help point to a cause?
If so read the following:
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
Don't be concerned about anything that says "Problem" or "failed".
Copy and paste its output in a reply.
Etrecheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.
Fair enough. I apologize for that but I'm trying to run a business and I've spent about £9000 on apple computers with only one - that hasn't been updated - running smoothly.
Macpro results were:
Mac Pro - model: MacPro5,1
2 2.4 GHz 6-Core Intel Xeon CPUs: 12 cores
16 GB RAM
OS X 10.8.2 (12C60) - Uptime: 0 days 0:5
HL-DT-ST DVD-RW GH61N
WDC WD1001FALS-41Y6A1 disk0 : (1 TB)
disk0s1 (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) /: 999.35 GB (290.46 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Problem System Launch Daemons:
Problem System Launch Agents:
[not loaded] com.adobe.SwitchBoard.plist
[not loaded] com.adobe.AAM.Updater-1.0.plist
User Launch Agents:
User Login Items:
3rd Party Preference Panes:
Flip4Mac WMV Plugin.plugin
User Internet Plug-ins:
1.5 % iTunes
1.4 % WindowServer
1.1 % EtreCheck
0.5 % activitymonitord
0.4 % fontd
0.1 % Activity
0.0 % imagent
Thanks. Your Mac Pro's hardware is more than capable of running Mountain Lion and should not be having these problems no matter what version of OS X you use.
Try creating a new, "temporary" user account. Log out of all other accounts, and log in under the "temporary" one. It will not have your user login items so you will not be able to do everything that you can do with your usual account.
To simplify troubleshooting, disconnect any hardware other than the minimum required to operate your Mac. Use the temporary account and determine any differences in performance. You mentioned that all tasks are incredibly slow, so if you mean basic operations such as opening and closing Finder windows, launching applications, copying files and so forth remain unacceptably slow, then more troubleshooting is required. For that you can run Apple Hardware Test and Disk Utility.
Here are their instructions:
Creating a temporary account to isolate user-specific problems: Isolating an issue by using another user account
To identify potential hardware problems: Apple Hardware Test
To resolve startup issues and perform disk maintenance, use Disk Utility.
To repair a startup disk, you must start your Mac using OS X Recovery or another startup volume. If the disk requires repairs, it may be an indication that the disk is in need of replacement.