Just a minor thing.

This is string that displays at the bottom of my forum: Powered by {0} versão {1} YAF | YAF © 2003-2012, Yet Another Forum.NET

Clean Install. .net framework 4.0.

Thanks

<Resource tag="POWERED_BY">Powered by {0} version {1}</Resource>

to

<Resource tag="POWERED_BY">Powered by</Resource>

And Save the File and Restart YAF to see the changes.