Hi Yum has just updated 5 of my Linux boxes running CentOS 4.3 to the 2.6.9-42 kernel. All is well on four of the boxes, but on the fifth the network card (eth0) will not work. I've downgraded the kernel to the previous version and the network card works fine again. I've tried removing and re-installing the new kernel, but the network card won't work with it. The details of the card are as follows: lspci:- 00:0e.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) /etc/modprobe.conf:- alias eth0 8139too Any suggestions welcomed.. Thanks Clive