Is there any optimizing and tuning techniques for linux machine. I am running mandrake 10.1 for quite sometime and its gets slower after couple of days, say 10 days. Now if I restart the pc then it works fast again. Is there any way to optimize and tune the linux machine with some commands i.e. without restarting it. I have disabled all the unecessary servers/daemons which are runing in background. Gimme some ideas. I am a newb.