a) I assume the new 2010 iMac can handle 12gb of ram (2 X 2gb + 2 X 4gb) with no problem. Is that a correct assumption? b) Do the 4gb & 2gb sticks have to be installed in a particular order? (i.e. 4gb sticks in the left slots and 2gb sticks in the right) Or, just plug them into any slot and let 'er rip! Thx in advance.