Rss feed did not work

im using wp mu 3.0

with multilple db

http://www.blog.co.in

rss feed did not work

http://blog.co.in/feed/

anybody can help fix this

XML Parsing Error: no element found

Location: http://blog.co.in/feed/

Line Number 2, Column 44:<!– Feed was loaded from a cached file –>

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^