Import Problems

When debug is turned on, this message appears at the top of Tools -> Import:

Strict Standards: Redefining already defined constructor for class WXR_Parser_Regex in /var/sentora/hostdata/zadmin/public_html/eowynivey_moisant_me/wp-content/plugins/wordpress-importer/parsers.php on line 408

Strict Standards: Declaration of WP_Import::bump_request_timeout() should be compatible with WP_Importer::bump_request_timeout($val) in /var/sentora/hostdata/zadmin/public_html/eowynivey_moisant_me/wp-content/plugins/wordpress-importer/wordpress-importer.php on line 38

Any ideas why?