It has been over a week since the Apple Developer Center Web site went offline, with no indication of when it will be fully back. However, Apple has created a status page displaying an itemized checklist of what services are online. (Alas, you can’t click the icons to bring services up and down!) In email to developers, Apple announced that it is prioritizing the order in which updated systems will be made available. Certificates, Identifiers & Profiles, Apple Developer Forums, Bug Reporter, pre-release developer libraries, and videos will be available first, followed by software downloads and remaining systems. (Most Developer Center systems have since come back online.)follow link
Viewing Wi-Fi Details in Snow Leopard
In Snow Leopard, hold down the Option key before clicking the AirPort menu. Doing so reveals additional technical details including which standards, speeds, and frequencies you're using to connect, as well as what's in use by other networks. With the Option key held down and with a network already joined, the AirPort menu reveals seven pieces of information: the PHY Mode, the MAC (Media Access Control) address, the channel and band in use, the security method that's in use, the RSSI (Received Signal Strength Indication) measurement, the transmit rate, and the MCS Index. In Leopard, some, but not all, of these details are revealed by Option-clicking the AirPort menu.
Apple Deploys Developer Center System Status Page