Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5H11 Safari/525.20)
Try Firefox for mac and see if it is any faster. You may have a corrupted preference file for safari. I'd try firefox and if it is faster, delete the preference file for safari. After that open safari and it will create a new preference file. Hope this helps. It's just a guess.