I know someone who is strongly considering purchasing a new PowerMac G5 within the next month and would like to ask a few things on their behalf. Firstly, I know that there are no CPU upgrades for any G5 tower, but if they come out how difficult will it be to change them in the 2.5Ghz tower? Can a technically savvy end user be capable of swapping the daughter card (it has a daughter card, right)? And another thing, when is Tiger going to ship? If its soon will it be installed on the new towers?(I am assuming yes, but if any one say's otherwise then I would like to know what's up?) Thanks in advance.