I'm going to try the same thing when I get home this evening (usually
carry my DVD in my bag, but took all that stuff out last week, lol).
I figured the repair install would fix it though. Have you reinstall
the Zune 2.1 software after the 'upgrade'? Also, did you initially
have problems upgrading the Zune software before you had problems with
the wlan? My firewall was turned off, so the install kept failing at
100%, so I removed the old zune software, rebooted, reinstalled the
new software, and that's when I noticed I was having wlan problems...