Hello MacRumors I switched from a windows to a Mac. On my Windows I was used to clean it now and then. I would do something like: - delete the cache - delete missing registry files - delete temp. files - perform a quick antivirus scan But after reading some Mac peoples statements, you shouldn't clean a Mac at all, because the Mac does it by itself - but how? How come a Mac can't get 'dirty' over time? Would someone please help me understand this, because I really can't understand how my Mac will be performing great after 2 years without any form for cleaning or maintenance... Thanks in advance!