One of my Mac's is a Mac Mini G4 1.42 GHz with 1Gb of Ram. It's had Leopard on it since December 2007. Ever since my update to 10.5.8 last week the fans on the Mac Mini are almost constantly spinning at full speed. I only use Mail and Safari and it uses Mobile Me and Time Machine. Has anyone else experienced this or is my beloved Mac Mini on it's poor way out??