I see many toons half dressed or naked, and some items and icons have ? symbol, making them unusable. Anyone at all know what the problem may be?

I have a lot of add ons, and obviously they are most likely the issue. Most of mine consist of Fubar, SCT, AGUF, Skinner, Bartender and Deuce Commander,

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There are only three bad-asses in this world, and the other two send me Christmas cards.

Try removing your WDB folder.

We see this issue come up frequently on the tech support forums. It is generally a firewall or router configuration issue. Please check out our support page regarding this problem:
http://www.blizzard.com/support/wow/?id=aww0834p