Hi, I am facing a problem with my miniMac. The problems are as follows, i) Dock is not shown continuously, ii) Applications such as iTunes.app , FireFox.app are crashing. iii) System is taking around 5-6 min for rebooting. iv) Finder is crashing while opening the folders such as Applicaiton, Download, installables etc... Please help me for a solution. I didnt had any idea why all of sudden its went this way.. Thank you. I am using Mac Leopard 10.5.8 upgraded from the 10.5.4 Also System preference also get crashed when modifying some preferences such as Spotlight, Dock etc.. Does again using the combo update to just upgrade would help anyWay....??