Recommended for iMac models released in late September 2013 (see “Apple Updates iMac with Faster CPUs and 802.11ac Wi-Fi,” 24 September 2013), Apple has issued iMac 10.8.5 Supplemental Update 1.0 for those models with an Nvidia GeForce GT 750M graphics processor running OS X 10.8.5 Mountain Lion. The update fixes two bugs: one that caused external drives to eject after the iMac goes to sleep and another that prevented certain USB Bluetooth adapters from working. (Free update, 17.1 MB)
Undelete an iPhone Voicemail Message
There's no Command-Z in the Phone app, but you may be able to retrieve a deleted voicemail message: Open the Voicemail screen in the Phone app. At the bottom of the screen, tap Deleted Messages. To restore a listed message, tap it and then click Undelete.