4) The Bitcoin Mac client takes 100% of my CPU (rather, one of my two cores) when doing nothing. I do NOT have generation turned on.
hi, welcome to the forum.
where do you check the 100 % cpu consumption on mac, please?
i got mine a few weeks ago and still don't know many basic things
1) as for the sending money, your client should infom you instantly as 0/unconfirmed that a transaction crediting your address entered the network. what we wait for is the block being mined that would save the sending confirmation permanently in the block chain (our shared transaction history)
2) you can see from which address the payment comes. what you don't know is who controls that address.
it's a good practice to use new address for each expected income. unless you publish a tipping jar for donations
where you don't care.
3) well, this software is still beta. you have no choice yet if to download the whole transaction history or only the lightweight (headers only) blockchain. this needs more time