I was deleting a few larger files (some where around 1 GB) and I got a Kernel Panic. Computer is a PowerBook G4, Mac OS X Tiger, ext2fs 1.4d4. System-Log before the crash shows lots of

Jan 12 22:39:26 pg4 kernel[0]: EXT2-fs DEBUG (/Users/brian/Projects/Sourceforge/ext2tiger/src/gnu/ext2fs/ext2_linux_balloc.c, 238): ext2_free_blocks:ext2_free_blocks: freeing blocks 13024229 to 13024229
Jan 12 22:39:26 pg4 kernel[0]: EXT2-fs DEBUG (/Users/brian/Projects/Sourceforge/ext2tiger/src/gnu/ext2fs/ext2_linux_balloc.c, 238): ext2_free_blocks:ext2_free_blocks: freeing blocks 13024228 to 13024228
Jan 12 22:39:26 pg4 kernel[0]: EXT2-fs DEBUG (/Users/brian/Projects/Sourceforge/ext2tiger/src/gnu/ext2fs/ext2_linux_balloc.c, 238): ext2_free_blocks:ext2_free_blocks: freeing blocks 13024227 to 13024227

Panic-Log is as follows:

panic(cpu 0 caller 0x2D902054): -ve blkno in ext2_blktooff
Latest stack backtrace for cpu 0:
      Backtrace:
         0x00095138 0x00095650 0x00026898 0x2D902054 0x000FE000 0x000D5AA8 0x2D92FF98 0x000FE238
         0x000D69BC 0x000D6AE8 0x2D8FDEA4 0x2D917E5C 0x2D92EFC0 0x000FCE38 0x000F1040 0x002AAE28
         0x000AB930 0x00000000
      Kernel loadable modules in backtrace (with dependencies):
         net.sourceforge.ext2fs.fs.ext2(1.4d4)@0x2d8fb000
Proceeding back via exception chain:
   Exception state (sv=0x2D592000)
      PC=0x9003E72C; MSR=0x0200F030; DAR=0xE00D4000; DSISR=0x42000000; LR=0x90C202C8; R1=0xBFFFC0B0; XCP=0x00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.8.0: Fri Sep  8 17:18:57 PDT 2006; root:xnu-792.12.6.obj~1/RELEASE_PPCModel: PowerBook3,4, BootROM 4.3.7f3, 1 processors, PowerPC G4  (2.1), 800 MHz, 1 GB
Graphics: ATI Mobility Radeon 7500, ATY,RageM7, AGP, 32 MB
Memory Module: SODIMM0/J16TOP, 512 MB, SDRAM, PC133U-333
Memory Module: SODIMM1/J16BOTTOM, 512 MB, SDRAM, PC133U-333
AirPort: AirPort, 9.52
Modem: MicroDash, Euro, V.92, 1.0F, APPLE VERSION 2.6.6
Network Service: AirPort, AirPort, en1
PCI Card: TXN,PCI1410-02, cardbus, PC Card
Parallel ATA Device: TOSHIBA MK4021GAS, 37.26 GB
Parallel ATA Device: MATSHITACD-RW  CW-8121,

Regards,
Dave