I have a dual 2GHZ Power Mac G5 , I plan on getting a Mac pro next year sometime and I have some questions . Will I see a big improvement in speed coming from a dual 2GHZ G5 ? I mainly web browse , listen and watch podcasts light email and some video and photo editing . How is the Ubuntu support on the Mac Pro with the standard parts ? Is it easy to Dual-BOOT ? Lastly do you think a Mac Pro will be supported for a long time in regard to OS updates ? I have seen what apple is doing to other intel macs by dropping support for mountain lion and I am just wondering do you think I could get at least 10 years out of it at least ? They dropped support for powerpc pretty quickly for my taste . Thanks .