Some make sense, some don't. You can safely turn any of them off, but you may disable a function in the process. To find out what is causing the conflicts, shut them all off. You will be required to restart the computer to put the changes into effect. You may find that you need to turn some features back on if something doesn't work.
Some files affect scanners, printers, anti-virus, etc.
Start turning items back on one at a time and check for errors. If one item starts the errors again, you have found the offending program. Many times it is the anti-virus program. The system Configuration Utility and the System Information dialog boxes have a number of other tools not discussed here. To investigate the additional features, use Help in each window to find out what tools are available.