This is an old revision of the document!
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The following are known problems in the 06 June 2007 CSS Multi-Column Layout Working Draft. They should be resolved in the next draft.
http://lists.w3.org/Archives/Public/www-style/2008Jun/0359.html http://lists.w3.org/Archives/Public/www-style/2007Dec/0045.html http://lists.w3.org/Archives/Public/www-style/2007Dec/0046.html http://lists.w3.org/Archives/Public/www-style/2007Dec/0047.html http://lists.w3.org/Archives/Public/www-style/2007Dec/0064.html