Ok, this may be obvious, but note that there is a fundamental
difference between Head being "unstable" in the sense of being
incomplete, buggy, and needing work, vs. Head being "unstable" in the
sense that's it's so broken that you can't even install it at all.
The later state makes working on and improving Head rather more
difficult...
When Mohan asked for a CVS tag on a "stable point" on Head, I suspect
he probably meant the first state described above - still "unstable",
needing work, and incomplete, but installable, not broken.
(The rest of what everybody else said sounds fine of course, I just
felt like pointing out the above...)
