2.0 Ghz 13" Unibody Macbook w/ 2 GB DDR3 RAM, purchased March 2009, running 10.5.8 All software loads very quickly, and even safari and firefox open up very quickly upon startup. However, there's an enormous lag between page loads on all browsers, which has only been happening for the past couple days. It takes 10-20 seconds for most sites to load. This problem only started happening 2 or so days ago. My early '08 macbook pro (2.5 GHz Penryn running snow leopard) is connected to the same wi-fi, and all browsers are extremely fast without any major load times. Any ideas to what could be causing the problem on my girlfriend's unibody mb? Any help is greatly appreciated!