"Sung N. Cho" <sucho2@vt.edu> writes:
> Is it sound to use the current kernel with the userland from the release, 
> i.e., 1.6-RELEASE, ?  Or would I run into problems when I use the current 
> kernel, I believe 1.6M, without the 1.6M userland files.  And suppose 1.6M 
> kernel works fine with the RELEASE userland, would I still be able to use 
> what 1.6M is capable of?  Thank you.

It is usually okay to use a newer kernel with an older userland. A few
things like ipf may break though -- it is best to update your userland
as soon as you can.

It is always a bad idea to use a new userland with an old kernel
because new system calls may be made by the new userland that the old
kernel will not support, resulting in failures. Always update your
kernel first, then your userland, when upgrading.

Perry