After upgrading an Xsan metadata controller (MDC) from Mac OS?X?v10.6 Snow Leopard to OS?X Lion, Xsan Admin may display a warning triangle over an Xsan volume. Hovering the mouse pointer over the warning triangle reveals the following alert: “Volume is not running on mdc2.example.com” This message appears even though there is an fsm process for the volume running on the MDC named in the message. Read more “Xsan Admin displays incorrect "Volume is not running" alert after upgrading Xsan metadata controllers to Lion”

When a system is upgraded from Mac OS X v10.6 Snow Leopard to OS X v10.8 Mountain Lion, existing rules may not appear the first time Mail is opened. Read more “OS X Mountain Lion: Mail rules may not appear after upgrading from Mac OS X v10.6”