problems about upgrading kernel

[Yu Zhao <zhaoyu@cc.hut.fi>]

Hello every one:

I have a problem:

When I upgrade kernel from 2.0.30 to 2.0.35, everything works OK.
But when I restart my computer, it complains that network can not reached, 
and NFS does not work. But when I reboot using old kernel, all works fine.
 
(I use debian 1.3)

Could you tell me why?

yours
zhao