I'm using Mozilla 1.7b (Gecko/20040316). Inadvertently deleted address book
cards and am unable to retreive them. Undo is greyed out. Irretreivable data
loss. It may as well be a crash.
This bug is serious enough to severely limit wider acceptance of the Mozilla
product. Users will not use a software product if they're reluctant to commit
their data to it for fear of losing their data.