My upgrade from Karmic didn't go so smoothly on i7 machine. Download and install went fine. But,
1) machine failed to boot (something about Grub_puts_ missing, no grub menus at all) - had to use old Debian install to rescue - just had to run "grub-install /dev/sda".
2) Then, my wireless keyboard/mouse wouldn't work. Had to run off to Wal-mart to buy a "generic" keyboard/mouse to get into the system.
3) Then, DNS didn't configure properly. No name resolution. Had to "apt-reconfigure dnsmasq" and it's ok now.
Glad I had a clue, that would be a vexing combination of issues for alot of people. But, now that I'm "back in" everything else seems to be ok.

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