Apple has posted a new firmware update for “Uniprocessor” Power Mac G5s to resolve some potential issues with the previous release (v5.1.5f1). Apple notes: “After applying the Power Mac G5 Uniprocessor Firmware Update 5.1.5f1 to some 1.6 GHz computers, unexpected issues might occur. But you can install Firmware Update 5.1.5f2 to fix them. What unexpected issues? It could be a kernel panic, the loss of USB function with some keyboards or mouse tracking devices, Bluetooth USB modules that don’t respond five minutes after starting up, or interrupted audio playback in iTunes. Disconnecting and reconnecting devices does not help. Removing some or all non-Apple memory (RAM) usually stops the issue.”[Link credit to VersionTracker]