I've just upgraded and am seeing this same error on two separate installs. It happens with RSS widgets only.
Warning: gzuncompress() [function.gzuncompress]: data error in /home/mysite/public_html/mywebsite.org/wp-includes/http.php on line 1831
RSS Error: XML error: not well-formed (invalid token) at line 1, column 1
Fatal error: Call to undefined method WP_Error::__destruct() in /home/mysite/public_html/mywebsite.org/wp-includes/default-widgets.php on line 735
I've deactivated the RSS widgets for now and things seem to be OK.
Any thoughts?
