Yes, I have had problems with yahoo's e-mail program...but not before they made it "new and improved." I tried to contact them and I did manage to find a page with a form to fill out requesting help. They did reply but I couldn't reply back because they didn't give me an e-mail address to reply to!
I got fed up with it and quit using it. I tried to make it work for weeks and noticed how unreliable it has become. Maybe it works for other people, but it doesn't for me. Some links they have got buried behind tabs and that I know is nothing I can fix. Personally, I think my problems with yahoo are because I have high-powered protection programs that block much of the crap yahoo tries to dump on my pc.
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"Has not my hand made all these things, and so they came into being?" declares the LORD. "This is the one I esteem: he who is humble and contrite in spirit, and trembles at my word." – Isaiah 66:2