DiapDealer, great job at diagnosing the problem and patching the fonts. While I appreciate your efforts, I must remind you and pholy that by distributing modified versions of Source Sans Pro while using the Reserved Font Name 'Source' you are both in violation of the fonts' license.
Please disable the current font downloads, or provide them under a different font name.
We're working on a revision to Source Sans Pro that will fix this and other issues, and we'll post it on SourceForge (
http://sourceforge.net/projects/sourcesans.adobe/files/) as soon as it's ready.
Thanks,
Miguel Sousa
Team Lead
Type Development
Adobe Systems Incorporated