• Don't make your user mad.
• Don't make your user lose work.
• Don't make your user change email client.
• Don't make your user change email protocol.
• Don't make your user reconfigure ssh client.
• Don't make your user's email stop working.
• Don't make your user's any application stop working.
• Don't make your user's email become slower than before.
• Don't make your user's any application slower than before.
• Don't make your user's shared folders stop working.
• Don't make your user's printing stop working.
• Don't make your user's email stop printing.
• Don't make your user's mailing lists change the way they work.
• Don't make your user's ssh session timeout change the way they work.
• Don't make your user's daily routines stop working.
• Don't make your user's occational use cases stop working.
• Don't make your user's different login profiles overwrite each other.

Now go ahead and upgrade the network infrastructure.

JWZ: And then Nat went back to whichever flyover state Novell is in, and a few days later he said to me, "wow, you really bummed me out, because the dozen other people I had talked to before you were all like, `a free ????????? system, that's an awesome idea!' Then you depressed me, and I came back here and told the other guys what you had said, and they were all, `Oh, @#$%. He's right.'"

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