problem with ls, auto-completion functions on mounted disk with 2.4.x kernels

Hi,
is anybody know a problem with the ls, auto-completion... commands and a SGI partition mounted on LInux 2.4.x kernel ?

in our lab', home directories are mounted from SGI to redhat 7.0 pc. if i make a 'ls -al' of a directory, i have the list of all files in this directory.. but if i make a ls *, some files (or directories) are missing. This problem is only with 2.4.x kernels. We have compiled 2.4.3, 2.4.5 and 2.4.6 kernel with the same problem. When we reboot the same machine on 2.2.16 (or 2.2.19) kernel, problem is gone. This problem is retrieve on redhat 7.0 (with 2.4.x kernel), redhat 7.2 (2.4.2 kernel) and Mandrake 8 (2.4.3 kernel).
We retrieve this problem with gnome softwares but not with KDE softwares ! (no relation with the windows manager).
If we make a copy of a problematic directory in another directory on the mounted disk (or on the local HD) problem is gone. We don't have problems on the local disk.

any idea ?

best regards,

Dr Emmanuel BETTLER
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