I am working on a MacPro 2 x3 GHz Dual Core Intel Xeon, with 5 GB 667 MHz DDR2 FB-DIMM RAM, on OSX 10.4.11. I am using the Mac as an editing station. I have installed Final Cut Studio 2, iWork, DVxDVD, MacJanitor, and Disk Warrior. I have attached to the system 1 Firewire Sony DSR-11 deck, and 2 LaCie 1 TB external hard drives. These past few days my computer has been acting funny. First DVxDVD stopped working. Then Final Cut has been acting funny. I have done the standard Final Cut fixes including repairing permissions and trashing preferences, which did help. But then it wouldn't launch. And then I got a kernel panic (aka 'black screen of death'). End of day so I figured I'd deal with it this morning. And this morning FCP launched, then wouldn't. So I unplugged the external devices and it launched fine. Plugged in the LaCies and it launched fine. Plugged in deck and bingo! Wouldn't launch. But I need my deck. So I plugged it back in and restarted and FCP launched and everything was operating fine. I then ran Disk Warrior on all the drives and hardware check checked out fine. Then I tried to use DVD Studio Pro and it wouldn't respond. Then bam, another kernel panic. Here is the log: Wed Feb 27 18:33:06 2008 panic(cpu 0 caller 0x001368F4): stack_alloc: kernel_memory_allocate Backtrace, Format - Frame : Return Address (4 potential args on stack) 0x52e43848 : 0x128d0d (0x3cc65c 0x52e4386c 0x131f95 0x0) 0x52e43888 : 0x1368f4 (0x3ccfec 0x52e438bc 0x4000 0x7fff) 0x52e438c8 : 0x13bb58 (0x940c2dc 0x206 0x52e43938 0x14185d) 0x52e438f8 : 0x13bbab (0x66e7e2 0x80c3600 0xffffffff 0x52e4391c) 0x52e43928 : 0x13bc7c (0x66e7e2 0x80c3600 0xffffffff 0x52e4396c) 0x52e43948 : 0x380fc3 (0x66e7e2 0x80c3600 0x52e4396c 0x3bf4ff) 0x52e43978 : 0x6704b8 (0x66e7e2 0x80c3600 0x93e1880 0x3bfa51) 0x52e439b8 : 0x38a0da (0x80c3600 0xe0000030 0x7eae000 0x0) 0x52e439f8 : 0x38a335 (0x7eae000 0xe0000030 0x80c3600 0x0) 0x52e43a28 : 0x386a23 (0x80c3600 0x52e43aec 0x276a3000 0x0) 0x52e43a68 : 0x38a095 (0x7eae000 0x38a302 0x52e43aec 0x7b48cc0) 0x52e43a88 : 0x38a2eb (0x7eae000 0x38a302 0x52e43aec 0x8) 0x52e43ac8 : 0x38a38a (0x7eae000 0x7b6d440 0x38a302 0x52e43aec) 0x52e43b08 : 0x647750 (0x7eae000 0xe0000030 0x0 0x0) 0x52e43b28 : 0x38a0da (0x7eae000 0xe0000030 0x7e5bb00 0x0) 0x52e43b68 : 0x38a335 (0x7e5bb00 0xe0000030 0x7eae000 0x0) Backtrace continues... Kernel loadable modules in backtrace (with dependencies): com.apple.iokit.IOFireWireAVC(1.9.7)@0x66d000 dependency: com.apple.iokit.IOFireWireFamily(2.6.0)@0x63b000 com.apple.iokit.IOFireWireFamily(2.6.0)@0x63b000 Kernel version: Darwin Kernel Version 8.11.1: Wed Oct 10 18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386 Does this log say something to you guys??? Is it the deck causing this??? What could solve it? I am in the middle of an edit and needless to say this is really scaring me.