Thread:Project:Support desk/PHP/libxml2 combination error when installing 1.18.1; any workarounds?

So when I try to install MediaWiki 1.18.1 I get the following error: "Your system has a combination of PHP and libxml2 versions which is buggy and can cause hidden data corruption in MediaWiki and other web applications. Upgrade to PHP 5.2.9 or later and libxml2 2.7.3 or later (bug filed with PHP). Installation aborted."

My host is running PHP 5.2.17, so I'm okay there. However, it's only running libxml2 2.6.30, and they've not given me any indication as to when they'll be upgrading. Is there any workaround for this error that I can use?