I have an FMPSA running on an iMac with Leopard OS which hosts about 10 databases.

I have had no problems connecting from various machines / configs until recently. I have two MacBook (mid2007) machines which have newly installed OS 10.5.7 and neither can see any local or remote hosts on filemaker 9v3. I cannot see any difference in these machines in the Network setup, to machines that CAN access the files from the same network. I can also ping the remote machines I am trying to connect to, so I know the path works fine.

Everything else works - I can access the internet, login to a remote machine using AFP, email, etc.; it is just filemaker that does not work. I newly wiped and installed FMP 9v3 on both machines, and can only open database files on the local machine.

Any suggestions for what to look for would be great!

Although you cannot see the local host nor the hosted files, have you tried opening a known file by going through favourite hosts and manually entering the filepath:

fmnet:/12.34.56.78/KnownFileName

Make sure you've run the "FileMaker Server and FileMaker Server Advanced 9.0.3.326 + SSL Updater" on your server, and the "FileMaker Pro 9.0.3 & FileMaker Pro 9 Advanced 9.0.3 SSL Updater" on your clients.

There was an issue with the SSL certificates built into the applications when using secure connections over FileMaker Network Sharing that these updates address. Note that they are more recent than just the 9.0.3 update.

- John