Recently active topics in SlideShare tagged with amazon

After embedding my presentation here:
http://userfirstweb.com/255/slideshow...

I noticed that the page was returning four errors. Those errors are forbidden files being referenced from the Amazon S3 service. The files are:

http://s3.amazonaws.com/crossdomain.xml
http://s3.amazonaws.com/slideshare-au...
http://s3.amazonaws.com/slideshare-au...
http://s3.amazonaws.com/slideshare-au...

These files show up as errors in Safari. I'm seeing the same issue on another embedded slideshow here:
http://www.cloudfour.com/31/mobile-ts...

Although it only has one error which I suspect is because it does have an audio file whereas the first example I gave does not.

Hi --

I'm trying to download a presentation at http://www.slideshare.net/Alex.Osterw... but am getting an AccessDenied error from the destination page (http://s3.amazonaws.com/ppt-download/...). Any idea what this is about? Is Amazon blocking downloads to/from certain sites?

Thanks,

Ramon