No matter what O/S you are running, there comes a time when things don't go quite how you expect. The performance of any system tends to degrade over time, as more and more applications are installed and running processes created.
Therefore, it's likely that at some point, you'll need to do what is known as Housekeeping. Just like your home, this is where you take some time to tidy up and clean away the junk that has accumulated over time! Also like your home cleaning, you'll need to do this on a regular basis!
The main jobs on a PC tend to be:
Disc: as more and more applications are installed, the amount of free disc space dwindles, so it's important to do the following on a regular basis:
Empty anything in your Rubbish Bin that you will definitely not need
- Go through and remove any applications that are no longer needed
- Go through your Directory Structure and remove any data you no longer need
- Go through your /var/log directory remove any log file generations you no longer need
If you are running Ubuntu, run System → Administration → Computer Janitor and check if any of the suggestions listed can be deleted
If you are running Ubuntu, run System → Administration → Disk Utility, click on each disc and run a "Benchmark" to see how your discs are performing : if performance is dropping off, some action may need to be taken. Also, you can check the "Smart Data" to see if any errors have been flagged
CPU: as more and more applications are installed, the amount of CPU load increases, so it's important to do the following periodically: