NFS mount of SCO NFS server problem.... Any ideas??

Hi,

I have two Slackware 9.1 Linux boxes. One is stock Slackware 9.1 with
the 2.4.22 kernel and the other is Slackware 9.1 with the 2.4.29
kernel... On the first one (2.4.22) I can successfully mount an NFS
disk shared from a SCO OpenServer 5.4 machine and everything works as
expected... On the second machine, if I mount the same NFS shared disk,
I can see the files but _some_ of the files are unreadable... If you
try, for instance, to vi or cat one of the 'unreadable' files it says
there are 0 bytes... but you can ls -al the file and see that it is of
a certain non-zero size.... Opening the same file from the first
machine works flawlessly.... Other files on the share can be opened
from both Linux machines.... I do not understand why.... I have tried a
variety of mount options without any noticible difference....

Any suggestions or ideas... I need to use the later kernel on the one
machine to get SATA disk support.....

TIA,

Dave