Gap4 not showing up folders with NFS drive

  • My problem is: 

    When i try to browse on my Redhat Linux AS, Xeon 64 bit quad cpu, it's working fine until i get through a NFS mounted drive with a SUN Solaris OS. I can't see the folder structure or any . or .. folder name. I know it is not a security problem or access problem.

    Do you have an idea about that ?

    Thanks for your help.