long term support, multiple kernels, etc

Hi all -

I had to see a picture to get my head around the implications of 
multiple kernels and long-term support, so  I've attached it in case it 
helps anyone else think about this.  I wanted to see what sort of 
security/supportability quagmire we might be getting in, so this 
represents the scenario where we have different kernels for Dapper and 
then continue on that path. So in some senses this is a worst case 
scenario (i.e., continue to have different kernels for desktops and 
servers for each release), but I also think that once we go down the 
path of having separate kernels, it will be difficult to pull them back 
in line, so in some ways I think this is also a realistic scenario.

Also, I've assumed that we will do longer life cycle releases every 2 
years, but this is not a decision or commitment to do so - just an 
assumption for this drawing.

You'll note that worst case scenario ends up being 9 kernels being 
supported concurrently, but even as early as a year from now we could 
potentially be up to 5.

Cheers,
Jane
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