I'm running a Mac mini as a home HTPC. I want to leave it on 24/7 like I have my old windows laptop the past couple of years. I'm new to all thin Mac. Firstly do Macs show age after long run times? Do they get sluggish or slower, low on memory, etc? I'd like to have a program running that continually monitors the status of the system and keeps it feeling "Fresh" by clearing out any leaks etc. Sounds possible?