Is the new "improved" Yahoo Mail working correctly or should I just switch to Gmail?

Yesterday I got a notice that Yahoo mail was being updated with all kinds of handy features I don’t need.
I have had this account for 14 years and liked the way it worked. I used it for email and my contact list. Simple. Today, I updated to the newest version as Yahoo requested. Messenger turned on and I immediately got 4 messages from “hot, wet girls who totally want to trade pix” My contacts don’t work. I can’t enter new contacts. I can’t find my address categories (now called lists) and I get an “Unexpected error. Please notify customer support if this problem persists.” but they give me no way to contact said “Support”. I have been resisting the Google monster, but is it time for me to dump this dog and move to Gmail? Is the new Yahoo mail working correctly for anyone else here?
I am using XP, Firefox 3.6.18.