Fonts: Wingdings 3 and Wingdings 3.ttf

Trying to solve slow Snow Leopard performance I followed a link, I used Font Book and Resolve Duplicates. But when I validate all the fonts I found this:

Font Book shows: Problems may heve been found with some fonts during validations
Please review the reported problems before continuing.
Wingdings 3 Shows: 1 font passed. This font should be safe to use.
Wingdings 3.ttf Shows: 1 minor problem was found. Proceed with caution.

What must I do?

Thank you in advance.
Francisco