Unable to validate, due to hardcoded resource limits (limit)
To prevent denial-of-service attacks, the feed validator imposes certain limits on the sizes of feeds it will process and the time it will spend waiting for a web server to respond. One of these limits was exceeded during validation.
Validate a smaller representative sample of this feed, or download the code and run it on your own system.
Not clear? Disagree?
You might be able to find help in one of these fine resources.