RSS parse error

Please help. I just upgraded to the new version of WordPress _2.3.3 and when I did so my feed stopped working.

Here is an example of the error:

XML Parsing Error: xml declaration not at start of external entity
Location: https://016e900.netsolhost.com/blog/wp-rss.php
Line Number 2, Column 1:<?xml version="1.0"UTF-8"?><!-- generator="wordpress/2.3.3" -->
^

I have tried everything. I have changed the charset of the blog. I have deactivated all my plugins, but still nothing.
Any and all help would be appreciated.