Apple has released Apple Remote Desktop Client 1.2.4, which delivers “improvements to security, performance, and reliability of the Apple Remote Desktop 1.2 client software running on Mac OS X versions 10.1, 10.2 and 10.3.” Apple Remote Desktop is administrative software for remotely managing Macs across a network or the Internet. The v1.2.4 update is available via the Mac OS X Software Update preference pane.