Hello. I've posted this already under the n770 section by mistake. Please forgive the double post.
I too was having issues with my yahoo mail account. I generaly use yahoo's
web mail as my primary email, but as we've found out the Opera browser doesnt
display it that well. So I did some searching. Go to M.YAHOO.COM it's the mobile
version of yahoo's web mail. It's.only text so html stuff and pictures wont show up,
but it loads flawlessly! I was able to browse through all my emails, manage contacts,
view all my folders and delete messages. As well as reply of course! It would be cool
if html and pictures were viewable, but this will give us Yahoo mail users a way to do
manage our webmail easily with the n800! I hope this helps!

SpIderkc ;D