No arp replies (On Linux > 2.6.8.1)

Hi

Saw Robert Franks post from Tue Jul 12 21:12:31 CEST 2005. I experience the
same
problem on the latest kernels.
Roberts output from tcpdump is similar to mine:
1:06:52.322566 arp who-has bla-wlan tell blubb-wlan
21:06:53.322229 arp who-has bla-wlan tell blubb-wlan
21:06:54.321914 arp who-has bla-wlan tell blubb-wlan

Seems like one way traffic..
Im running a DHCP server on the box and all I pick up with tcpdump is the
DHCP discovery request, the DHCPOFFER never gets to the client. Looks to me
like its unable to send data.

I get this problem when I try to use the at76c503a driver on a kernel >
2.6.8.1.
On my slackware box I've been running Linux 2.6.8.1 for a while with no
problems. 
Now I have installed Gentoo Linux 2005.0 with Linux 2.6.12 (gentoo sources,
not vanilla). 
I don't think the problem lies with the Gentoosources as I remember having
similar issues under Slackware with the latest vanilla source.

I tried installing kernel 2.6.8.1 on gentoo and everything worked fine. 
Sorry if this is a known problem, I have not been able to find any fixes.
Would be great to se the driver working with the latest kernels.

Any help would be greatly appreciated!

Regards
Stian Halseth