Using the Browse-Function of SMW I receive everytime the following error message: 

Notice: The function SMWWikiPageValue::getPrefixedText) is deprecated. in /home/httpd/vhosts/wiki-products.org/subdomains/de/httpdocs/extensions/SemanticMediaWiki/includes/SMW_DV_WikiPage.php on line 242

What does it mean and is there anything I should/can do about it?

The software we have installed:

 

MediaWiki: 1.11.0rc1
PHP: 5.1.6 (apache2filter)
MySQL: 4.1.20 

Semantic MediaWiki (version 1.0-RC3)
Semantic Forms (version 0.9.3)
DynamicPageList2 (version 1.4.6)
ParserFunctions

My best, Christoph