Are either these subscribed to in Internet Explorer?

wrote in message
...
We have Outlook 2007 and noticed that some accounts are getting "Microsoft
at Home" and "Microsoft at Work" automatically subscribed as a default.
Yet others do not. I am one of those users that has it and I know I didn't
not subscibe to these groups myself. How did this get entered as a
default? Was it part of a service pack? I'm toying with the idea of
banning all RSS feeds through group policies in order to avoid Exchange
free disk space issues.

Anyone have any idea on how these default RSS feeds came about?

Thank you,