64-bit Vista Rated 5 out of 5 stars
I loved Lightning with Thunderbird on my old XP machine. However, I had a problem with adding it on to T-Bird on my new Vista based machine. Turns out that the issue was that it was being blocked by my firewall/virus software and I was not getting any kind of notification due to the way that Lightning is added. Fortunately, it is up and running now.This review is for a previous version of the add-on (0.8).