As long as they keep happening, I'll keep posting them... (2 GHz 7447a G4 
tower running 2.1)

trap: kernel write DSI trap @ 0xe48b52f2 by 0x29d978 (DSISR 0x42000000, 
err=14)
panic: trap
Begin traceback...
0x0059bd20: at trap+0xec
0x0059bda0: kernel DSI write trap @ 0xe48b52f2 by pool_do_put+0x208: 
srr1=0x9032
             r1=0x59be60 cr=0x80009088 xer=0x20000000 ctr=0 
dsisr=0x42000000
0x0059be60: at ip_input+0x76c
0x0059beb0: at rnd_sample_free+0x40
0x0059bed0: at rnd_timeout+0x9c
0x0059bf00: at softclock+0x248
0x0059bf40: at hardclock+0x314
0x0059bf70: at decr_intr+0xfc
0x0059bfa0: at trapstart+0xb0c
0xd79e9cf0: at Idle+0x14
0xd79e9d00: at mi_switch+0x194
0xd79e9d40: at ltsleep+0x3e0
0xd79e9d80: at sys_poll+0x1f8
0xd79e9ed0: at syscall_plain+0xe0
0xd79e9f40: user SC trap #209 by 0x41c434d8: srr1=0xd032
             r1=0xffffc4b0 cr=0x24002084 xer=0x20000000 ctr=0x41b7328c
End traceback...