NETDEV WATCHDOG

[izlem Gozukeles <izlem17@gmail.com>]

Hello,
I am using Lenny (kernel : 2.6.26-2-686).
After I start my computer, in a few minutes,  I lose my Network connection with a kernel failure. In the error logs, it is saying that:
" r8169: eth0: link up
[ 3129.367003] NETDEV WATCHDOG: eth0: transmit timed out"

However, more interestingly, if I reboot (instead of starting) Lenny, everything is OK and never get error message "NETDEV WATCHDOG: eth0: transmit timed out".

What is the problem? 

Thanks

ps.
Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01)