I cannot categorize anything under operating systems either. “ERROR: Categories not saved. ERROR: Category section could not be located.” on http://www.wikihow.com/Special:Uncategorizedpages . I am using firefox 4.01 on debian.

Ah, this isn’t a bug, I don’t think:slight_smile:The uncategorized pages tool-thing doesn’t work for articles with non-standard formatting, so articles with subsections, etc. If it doesn’t work for you ever, you can always just look up the name of the category you would have used, open up the article, open the edit tab, and type in [[Category:Name of Category]] (Replacing the “Name of Category” with the desired category) just below the introduction.

Thanks