Client connection problem with 7.31FD7-1

Hi, I have just tried to upgrade a Tru64 Unix 4.0G server system from IDS 7.31FC2-1 to 7.31.FD7-1 (But using 7.31FD6-1 as an intermediate step.) {I know this version is very old, and the OS is also very old, but its all I have to work with, so no 'You really need to upgrade' messages please.} I had to rollback to 7.31FD6-1, as my Windows 2000 server clients would not connect to the database after the upgrade, giving a -908 error. (Using FD6 they connect fine.) I had not changed any sqlhost settings or any other network connectivity settings on either the client or server systems. No error messages were thrown on the Unix server, and I could use dbacces on the server to query the database. Onstat output looked good. I have a pair of Unix servers, which are clustered, the database image is on a shared SAN RAID5 drive, but the Informix software installation is held localy on system drives in each of the servers. I upgraded one server to FD6, and 'failed over' to that server. All went well, so I then upgraded the other server to FD7 and 'failed back' onto the other server. At this point all was well from a Unix point of view, but the Win2K server clients would not complete their database connection. I would like to get to FD7 as this fixes the CLNT_PAM_CAPABLE environment variable error message which is occasionally thrown into the message.log with FD6. I have performed this upgrade on our reference rig, without getting this error, so I am confused as to what could be happening. Any sensible thoughts, queries, suggestions gratefully received. Regards, Howie Anderson.

1.Is there any other error message such as conerr or oserr as below? 908: Attempt to connect to database server (B, conerr=-25580, oserr=32) failed. 2. Did you used "*" in your "Hostname Information"-"Current Host" field in setnet32 on your windows 2000? 3. Did you used LDAP authentication?