Hello, I have a MacBook Pro (2.2 GHz). After upgrading to 10.5.2 I have a very bad performance when using wireless LAN. Safari needs a lot of time to load URLs, also downloads are slow. However, when I boot into Vista (Boot Camp) the wireless LAN performance is excellent. Also Ethernet LAN performance (both Vista and Mac OS X 10.5.2) is excellent. Any idea ?