02:32 AM PST: Web Hosting – Unable To Publish Using Frontpage
Some Yahoo! Web Hosting customers may intermittently encounter an error “500 – Internal Server Error 500″ while publishing using FrontPage.
While we work to resolve this issue as a workaround you can deactivate and reactivate the FrontPage Extensions and republish.
We are aware of this issue and are working to resolve it in a timely manner.
07:41 AM PST
This issue has been resolved.