Avoid Current Firmware Updates -- Apple's just-released firmware updates (4.1.7 and 4.1.8) for recent iMacs, plus the iBook, G4 Cube, Power Mac G4, and PowerBooks with FireWire ports have caused much gnashing of teeth. The firmware updates, which were released both on the Internet and on the Mac OS 9.1 CD-ROMs that come with Mac OS X, claim to make improvements to FireWire target disk mode, network booting, gigabit Ethernet networking, and overall stability. They also enable password protection of Open Firmware booting to increase the security of Mac OS X (which can protect its files via user privileges, but can't do so when booted from Mac OS 9). The significant problem with these firmware updates is that something in them can prevent the Mac from recognizing some RAM modules from third party vendors. Apple has yet to make an official statement about the situation. Our advice: don't install these firmware updates until there's word from Apple. [ACE]
How Loud Are Your Mac's Fans?
When they get hot, Macs turn on various internal fans to keep components cool. The noise can be annoying, but just how loud is it? If you have an iOS device with a built-in microphone, you can download one of many free sound meter apps (search on
decibel in the App Store) and see if you're subjecting your ears to a truly unreasonable noise level.