Can I get some advice from the list?

I have a production system (www.icompute.com) running NetBSD 1.5, and
I want to update it to 1.5.2 with a minimum of risk and downtime.

What would be my best approach?

1. "live" update:
	Unpack tarballs right on top of the running system, and then
	reboot.

	Benefits: minimum downtime

	Risks: Does this work reliably, correctly?  Will I have running
		executables that don't get updated this way?
		Other gotchas?

2. sysinst update:
	Boot from floppy
	tell sysinst to "upgrade".

	Benefit: this is "supported". (right?)

	Risks: Much longer downtime.  I also don't know exactly what
		this does.  Does it mess with /etc, for instance?

3. other ways???


Many thanks for any comments,

-dgl-