panic in freebsd 6.0 current

one more time

db>
Fatal trap 12: page fault while in kernel mode 
cpuid = 3; apic id = 07 
fault virtual address   = 0x33203037 
fault code              = supervisor read, page not present 
instruction pointer     = 0x20:0xc068103c 
stack pointer           = 0x28:0xec0729f4 
frame pointer           = 0x28:0xec0729f4 
code segment            = base 0x0, limit 0xfffff, type 0x1b 
                        = DPL 0, pres 1, def32 1, gran 1 

processor eflags        = interrupt enabled, resume, IOPL = 0 
current process         = 409 (named) 
[thread pid 409 tid 100102 ] 
Stopped at      m_tag_delete+0x40:      movl    0(%eax),%eax 
db>

db> trace
Tracing pid 409 tid 100102 td 0xc5c8aa80
m_tag_delete(c8a5d900,33203037) at m_tag_delete+0x40
m_tag_delete_chain(c8a5d900,0) at m_tag_delete_chain+0x3b
mb_dtor_mbuf(c8a5d900,100,0) at mb_dtor_mbuf+0x15
uma_zfree_arg(c104a9a0,c8a5d900,0) at uma_zfree_arg+0x24
m_freem(c8a5d900) at m_freem+0x36
arpresolve(c5912000,c5e3fce4,c9839100,c5e529b0,ec072aa4) at arpresolve+0x1f4
ether_output(c5912000,c9839100,c5e529b0,c5e3fce4,c5c55900) at
ether_output+0x66
ip_output(c9839100,0,ec072afc,0,0) at ip_output+0x6fc
udp_output(c5d9c7bc,c9839100,c741d620,0,c5c8aa80) at udp_output+0x4a7
udp_send(c5eff2c8,0,c9839100,c741d620,0) at udp_send+0x1a
sosend(c5eff2c8,c741d620,ec072c38,c9839100,0) at sosend+0x5e3
kern_sendit(c5c8aa80,1c,ec072cb4,0,0) at kern_sendit+0x104
sendit(c5c8aa80,1c,ec072cb4,0,c5c1e590) at sendit+0x163
sendmsg(c5c8aa80,ec072d04,3,4628,286) at sendmsg+0x5a
syscall(bfbf003b,bfbf003b,bfbf003b,1,8a40a2c) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (28, FreeBSD ELF32, sendmsg), eip = 0x882f949b, esp =
0xbfbfe41c, ebp = 0xbfbfe598 ---
db>

Sorry for inconvinience
best regards 
Zvezdan Babic