kernel problem in nsphy0 at xl0 phy 24

[Condor <condor@vcable.net>]

Hello,
i have problem with nsphy0 at xl0.
I have 3Com 905 TX NIC card, my generic kernel in obsd 3.2 i386
--- paste from dmesg ---
xl0 at pci0 dev 10 function 0 "3Com 3c905 100Base-TX" rev 0x00: irq 10
address 0
0:60:97:91:57:1b
nsphy0 at xl0 phy 24: DP83840 10/100 media interface, rev. 1
--- end paste ---
ok, very well but i unable to set my cad to 100mbps full duplex.
I open my server and see  that this is corect nsphy (DP83840VCE)
but when i added in hostanme.xl0 option: media 100baseTX mediaopt
full-duplex my card is bring down nic power and not work. I try to set
manual to 100baseTX without mediaopt but no result.
Only work when i say "autoselect" in hostname.xl0.
I now using ukphy0 but my upload speed is very low.
If you remember i write some emails to misc and bugs that i have network
problems. I trying 7 differents nic (3com and realtek) but problem is
not resolved. I try to run out from obsd and migrate to fbsd but
freebsd unable to see my raid partitions, why i make in obsd.
I also try slackware 8.1 but have bug in instalation procedure,
fdisk see my old obsd partitions and i unable to delete it.
I try low level format but after format partitions still exist :)
I am happy that i use again obsd but i not happy that i unable to
resolve my network problem and any body do not say me where can be this problem. :(
Any body have idea why i can not set my xl0 nic card to 100mbps full-duplex? In nic card, i sucessful added auto start to 100 mbps full duplex, but i unable to set in obsd.

Regards,
Condor