I have some issues with my mac which i am finding completely unacceptable. Can someone show me where am i going wrong? 1) i cant mount a single dmg image... every program that i download in .dmg, i get an error message stating no mountable file systems 2) i tried mounting it through disk utility. However every time that i load disk utility, my imac freezes for atleast 2-3 minutes 3) i have an i5 10.6.4 imac... with pending updates to install. such updates cannot install because when i try, i get an error message 4) at times when i am using my imac, most notably google chrome and msn messenger, my imac freezes such that i have to reboot it. Being a new mac user, I find that such a stable os that freezes like this on these specifications is absurd and unacceptable. especially since i dont have a lot of programs running. Notes about my imac : bootcamped with windows 7 , macfuse, tuxera ntfs and ntfs 3G installed. Any help would be GREATLY appreciated.