Here's the information from the PowerBook running Dapper aftern connecting and mounting the Firewire drive successfully.

twt@pbg3:~ $ uname -a
Linux pbg3 2.6.15-28-powerpc #1 Wed Jul 18 22:51:07 UTC 2007 ppc GNU/Linux
twt@pbg3:~ $ lspci
0000:00:00.0 Host bridge: Motorola MPC106 [Grackle] (rev 40)
0000:00:0d.0 ff00: Apple Computer Inc. Heathrow Mac I/O (rev 01)
0000:00:10.0 ff00: Apple Computer Inc. Heathrow Mac I/O (rev 01)
0000:00:11.0 Display controller: ATI Technologies Inc 3D Rage LT Pro (rev dc)
0000:00:13.0 CardBus bridge: Texas Instruments PCI1131 (rev 01)
0000:00:13.1 CardBus bridge: Texas Instruments PCI1131 (rev 01)
0000:01:00.0 FireWire (IEEE 1394): Texas Instruments TSB12LV23 IEEE-1394 Controller
0000:05:00.0 Ethernet controller: Abocom Systems Inc ADMtek Centaur-C rev 17 [D-Link DFE-680TX] CardBus Fast Ethernet Adapter (rev 11)
twt@pbg3:~ $

twt@pbg3:~ $ tail -30 /var/log/syslog
Aug 23 21:34:25 localhost ntpd[4728]: frequency error 512 PPM exceeds tolerance 500 PPM
Aug 23 21:35:29 localhost ntpd[4728]: synchronized to 82.211.81.145, stratum 2
Aug 23 21:35:33 localhost ntpd[4728]: frequency error 512 PPM exceeds tolerance 500 PPM
Aug 23 21:43:02 localhost ntpd[4728]: frequency error 512 PPM exceeds tolerance 500 PPM
Aug 23 21:47:08 localhost kernel: [824457.052777] ohci1394: fw-host0: SelfID received, but NodeID invalid (probably new bus reset occurred): 0000FFC0
Aug 23 21:47:17 localhost kernel: [824465.487705] ieee1394: The root node is not cycle master capable; selecting a new root node and resetting...
Aug 23 21:47:17 localhost kernel: [824465.763722] ieee1394: Node resumed: ID:BUS[0-00:1023]  GUID[001010054000080c]
Aug 23 21:47:17 localhost kernel: [824465.764860] ieee1394: Node changed: 0-00:1023 -> 0-01:1023
Aug 23 21:47:17 localhost kernel: [824465.765858] scsi4 : SCSI emulation for IEEE-1394 SBP-2 Devices
Aug 23 21:47:17 localhost kernel: [824465.768731] ieee1394: sbp2: Node 0-00:1023: Using 36byte inquiry workaround
Aug 23 21:47:18 localhost kernel: [824466.875385] ieee1394: sbp2: Logged into SBP-2 device
Aug 23 21:47:18 localhost kernel: [824466.875563] ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048]
Aug 23 21:47:18 localhost kernel: [824466.877595]   Vendor: PI-101    Model: 1394/USB20 Drive  Rev: 2.65Aug 23 21:47:18 localhost kernel: [824466.877660]   Type:   Direct-Access                      ANSI SCSI revision: 00
Aug 23 21:47:18 localhost kernel: [824466.881570] SCSI device sda: 398297088 512-byte hdwr sectors (203928 MB)
Aug 23 21:47:18 localhost kernel: [824466.883163] SCSI device sda: drive cache: write back
Aug 23 21:47:18 localhost kernel: [824466.885099] SCSI device sda: 398297088 512-byte hdwr sectors (203928 MB)
Aug 23 21:47:18 localhost kernel: [824466.886670] SCSI device sda: drive cache: write back
Aug 23 21:47:18 localhost kernel: [824466.886702]  sda: sda1 sda3 sda4
Aug 23 21:47:18 localhost kernel: [824466.912607] sd 4:0:0:0: Attached scsi disk sda
Aug 23 21:47:18 localhost kernel: [824466.913917] sd 4:0:0:0: Attached scsi generic sg0 type 0
Aug 23 21:47:21 localhost kernel: [824470.187231] kjournald starting.  Commit interval 5 seconds
Aug 23 21:47:22 localhost kernel: [824470.189419] EXT3 FS on sda1, internal journal
Aug 23 21:47:22 localhost kernel: [824470.190535] EXT3-fs: mounted filesystem with ordered data mode.
Aug 23 21:47:22 localhost kernel: [824470.360019] kjournald starting.  Commit interval 5 seconds
Aug 23 21:47:22 localhost kernel: [824470.361656] EXT3 FS on sda3, internal journal
Aug 23 21:47:22 localhost kernel: [824470.362112] EXT3-fs: mounted filesystem with ordered data mode.
Aug 23 21:47:22 localhost kernel: [824470.540283] kjournald starting.  Commit interval 5 seconds
Aug 23 21:47:22 localhost kernel: [824470.541962] EXT3 FS on sda4, internal journal
Aug 23 21:47:22 localhost kernel: [824470.542422] EXT3-fs: mounted filesystem with ordered data mode.
twt@pbg3:~ $