I do have 2 kernels on my machine x86_64 :
Kernel A 220.127.116.11-92.fc8
Kernel B 18.104.22.168-40.fc8
Booting on kernel A my machine gets its IP address and runs on (but difficulties with X11 configuration, not a big issue at this time)
When booting on Kernel B, my machine does not find its IP address, system fails.
This is definitely due to the new kernel level, this happens since I updated to 2.6.25.xxx, each time I had the same issue (no DHCP).
Does anyone has an idea on what happens, regarding misconfiguration, and how I can help if there were a bug in the code ?