latest -CURRENT kernel panic

[Vincent Poy]

I updated from a March 6, 2004 -CURRENT which had been running without
issues to October 19, 2004 -CURRENT.  All -CURRENT since October 19,
2004 to the latest November 5, 2004 -CURRENT have been panicing with
the following:

Slab at 0xc3d75fa8, freei 14 = 0.
panic: Duplicate free of item 0xc3d75e00 from zone 0xc143e9a0(Mbuf)
cpuid = 0
KDB: enter: panic
[thread 100019]
Stopped at	kdb_enter+0x2c: leave
db> trace
kdb_enter(c0852d05,100,c38b0980,e,c3d75000) at kdb_enter+0x2c
panic(c086ce77,c3d75e00,c143e9a0,c08515e0,c086ce5b) at panic+0x17f
uma_dbg_free(c143e9a0,0,c3d75e00) at uma_dbg_free+0x10e
uma_zfree_arg(c143e9a0,c3d75e00,0) at uma_zfree_arg+0x1f6
m_freem(c3d75e00,c3a0b21c,c3a0b2f4,c3a0cd80,c38b7400) at m_freem+0x3e
xl_intr(c3a09000,0,c38b3c00,0,c0612120) at xl_intr+0x262
ithread_loop(c38b7400,e9f95d48,c38b7400,c0612120,0) at ithread_loop+0x186
fork_exit(c0612120,c38b7400,e9f95d48) at fork_exit+0x7e
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xe9f95d7c, ebp = 0 ---
db> 

Any ideas what could be causing this?  Is there anyway to write
everything above to a file instead of manually typing everything? 
Thanks.

Cheers,
Vince