Your "New Books" RSS feed (http://feeds2.feedburner.com/oreilly/...) cannot be accessed because it is "invalid". Readers generate the following message:
Refresh feed 'Books\O'Reilly New' failed with error: Reference to undeclared entity 'ccedil'. Line 105, position 59.
Running a validator yields the following messages:
This feed does not validate.
line 105, column 57: Undefined named entity: ccedil [help]
Peter Saint-Andre, Kevin Smith, Remko Tronçon</ ...
In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations.
line 3, column 0: Use of unknown namespace: http://www.oreillynet.com/csrss/ [help]
You people need to fix your feed.
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Thanks for reporting this issue. It looks like validator results suggest there's a problem character -- and there is! Sometimes these types of characters don't process properly in our feed generation, causing an invalidated feed result.
We'll take care of it shortly, and thanks again for your fast report.