Hello, I have several friends who own new MacBooks and MacBook Pros (all Core 2 Duo with the Atheros wireless chipset). They're all up-to-date with 10.4.9 and other software, but they are continuously experiencing kernel panics (from once a week up to 5 times a week). I am inclined to believe this is a widespread problem because this is occurring on at least 3 brand-new machines. One user noted a decrease in KPs when 10.4.8 came out, but he's still getting them now and then in 10.4.9. Here are logs from the last two kernel panics on the MacBook Pro: ********* Wed Apr 18 21:26:56 2007 panic(cpu 0 caller 0x0035C30A): mbuf address out of range 0x2012a00 Backtrace, Format - Frame : Return Address (4 potential args on stack) 0x24f2bca8 : 0x128d08 (0x3cb134 0x24f2bccc 0x131de5 0x0) 0x24f2bce8 : 0x35c30a (0x3eb8f4 0x2012a00 0x24f2bd28 0x197c2c) 0x24f2bd08 : 0x35c6aa (0x2012a00 0x804c 0x1 0x800) 0x24f2bd28 : 0x9e064d (0x36c9b800 0x0 0x0 0x1) 0x24f2bf08 : 0x39a463 (0x2361d2c8 0x3bf9780 0x1 0x38ad3b4) 0x24f2bf58 : 0x399635 (0x3bf9780 0x135eb4 0x0 0x38ad3b4) 0x24f2bf88 : 0x39936b (0x3c06d80 0x0 0x450 0x1203) 0x24f2bfc8 : 0x19ac1c (0x3c06d80 0x0 0x10 0x4ce40e0) Backtrace terminated-invalid frame pointer 0x0 Kernel loadable modules in backtrace (with dependencies): com.apple.driver.AirPortAtheros(223.47.4)@0x9af000 dependency: com.apple.iokit.IONetworkingFamily(1.5.1) @0x6c4000 dependency: com.apple.iokit.IOPCIFamily(2.2)@0x582000 dependency: com.apple.iokit.IO80211Family(153.2)@0x800000 Kernel version: Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386 ********* Thu Apr 19 22:27:03 2007 panic(cpu 0 caller 0x001A429B): Unresolved kernel trap (CPU 0, Type 14=page fault), registers: CR0: 0x8001003b, CR2: 0x0a02023f, CR3: 0x01754000, CR4: 0x000006e0 EAX: 0x0a02023f, EBX: 0x378e3b00, ECX: 0x378e3b44, EDX: 0x05010103 CR2: 0x0a02023f, EBP: 0x26023c28, ESI: 0x05010103, EDI: 0x378e3b00 EFL: 0x00010206, EIP: 0x05010144, CS: 0x00000008, DS: 0x00000010 Backtrace, Format - Frame : Return Address (4 potential args on stack) 0x26023a08 : 0x128d08 (0x3cb134 0x26023a2c 0x131de5 0x0) 0x26023a48 : 0x1a429b (0x3d0e4c 0x0 0xe 0x3d0670) 0x26023b58 : 0x19ada4 (0x26023b70 0x135380 0x4be70d8 0x35d09000) 0x26023c28 : 0x35c6aa (0x378e3b00 0x4b084c 0xc 0x23faa4bc) 0x26023c48 : 0x3ccdc98e (0x378e3b00 0x378e3b00 0x243a2004 0x0) 0x26023d28 : 0x3ccfbb1e (0x243a2004 0x378e3b00 0x15 0xa9b872e2) 0x26023f08 : 0x39a463 (0x23faa2c8 0x4b7cd00 0x1 0x464260) 0x26023f58 : 0x399635 (0x4b7cd00 0xf0b 0x40c76c8 0x4b9000) 0x26023f88 : 0x39936b (0x4bb8b40 0x26023fd4 0x134c09 0x39934e) 0x26023fc8 : 0x19ac1c (0x4bb8b40 0x0 0x19e0b5 0x4be4828) Backtrace terminated-invalid frame pointer 0x0 Kernel loadable modules in backtrace (with dependencies): com.apple.driver.AirPortAtheros(223.47.4)@0x3ccca000 dependency: com.apple.iokit.IONetworkingFamily(1.5.1) @0x3bdeb000 dependency: com.apple.iokit.IOPCIFamily(2.2)@0x35b48000 dependency: com.apple.iokit.IO80211Family(153.2)@0x3ccad000 Kernel version: Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386 ********* Has anyone else been experiencing this, and is this something Apple needs to address in software? Or should we send in these machines for repair? My Core Duo MacBook has never experienced any issues whatsoever, so I'm convinced it's an issue with the Atheros pre-N cards. I have sent message to Apple through several channels (apple.com/feedback, support page feedback for the "10.4.7 kernel panics" article, and through a local Systems Engineer) regarding the issue. Thanks a lot for any input!