FBSD 5.3RC1 on Fujitsu Siemens CELSIUS

[Goran Gajic]

I have found that if I disconet sk0 from Cisco Catalyst 3550 and connect 
it to other switch (Allied Telesyn) system works fine. As soon 
as I connect machine back to Cisco switch after 2-3 hours it crashesh. I 
don't know if this is significant but this is FE0/20 from 
Cisco running-config:

!
interface FastEthernet0/20
  description  TEST-AMD64
  switchport mode access
  spanning-tree portfast
!

Is it posible that cdp is causing problem? I didn't have luck with dump 
even though I have increased swap partition size to 10Gb I still end up 
with:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x18
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xffffffff803a0d73
stack pointer           = 0x10:0xffffffffb2ee37e0
frame pointer           = 0x10:0x0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 44 (swi1: net)
trap number             = 12
panic: page fault
cpuid = 1
boot() called on cpu#1
Uptime: 7h27m53s
Dumping 3327 MB
  16Error dumping block 0x0

Dump failed writing data (5)

Any sugestions what to do to provide more info?

Regards,
Goran Gajic