linux 2.6.12 instability

Just another tip,

I won't compile kernel in place, not in the source tree.

I use "make .... O=~/board_1/kernel-branch " for each board and each version of kernel,

the source tree must be clean first, with "make .... clean" and "make .... mrproper" .

And each board can have a copy of rootfs of different apps setup. ~/board_1/rootfs

I build kernel in the source tree for the buildroot guide,

only because it would be easier for newbie.