I can give you a hack that will work until 1.5 and a final release is available...
Find COM_rdfImport in lib-common.php:
Text Formatted Code
if ($charset == 'utf-8') {
$title = $feed->articles[$i]['title'];
} else {
$title = utf8_decode($feed->articles[$i]['title']);
}
Replace with:
Text Formatted Code
$title = $feed->articles[$i]['title'];
Of course this will break support for UTF-8 Feeds, but, since this is what's broken support for your feed, that may be an acceptable trade off for you.