SPNego Login fails while using MacOS 10.4 and Firefox

Hello,

we are running an EP6 NW04 SPS 19 on an HP UX. For authentification we

configured kerberos via spnego. This is working fine for all windows

clients and the browsers ie6, ie7 and firefox.

While using Firefox on MacOS X it is not working. We analyzed the error.It is the following

error message in the trace file:

Decoding error in parsing of spnego token.

[EXCEPTION]

iaik.asn1.CodingException: ASN.1 creation error:SPNego OID expected.

Found 1.2.840.113554.1.2.2

As you can see, the mac client is sending the raw kerberos ticket. How

does the WAS handles this ticket?

Kind Regards,

Oliver