Intel PRO/100 NIC trouble when memory is more than 2GB with RedHat7.1beta

The trouble is resolved:

I have obtained from intel site the follwing files:
    e100-2.1.15.tar.gz
    e1000-4.3.15.tar.gz
These are the source codes for both IA-32 and IA-64 Linux
to support the loadable modules for intel PRO/100 and PRO/1000 NICs.

After the redhat7.1beta kernal source packages is istalled from
the second CD-ROM, untar these files at any place and make under
the directory src of them and make install, change the 
/etc/modules.conf file so that eth0 is from eepro100 to e100 or 
e1000 accordingly. (I checked both kind of cards)
 I verified that with this new loadable module drivers, the network
trouble has been disappeared and repetive download and upload 
of large files does not make the system sick now.
Thank you.

H.M.