> Hi , all : > > > Sometimes my server network connection on Linux goes down with short > message in syslog saying: "[localhost kernel] NETDEV WATCHDOG: eth0: > transmit timed out" (or similar). > > By the way , I installed the CentOS 5.4 x86_64 bit and the kernel version > was 2.6.18-164. > > Has anyone experienced this problem or is it the bug of the kernel ? It usually happens with problems on the physical layer. You network card may be bad, or the connection, or the other side of the ethernet wire, or a driver problem in the linux kernel. We don't have enough information from you so say more. Simon