There are a few updates available for php-pear: HTML_Template_IT 1.1 (stable) 1.1.3 (stable) Mail 1.1.8 (stable) 1.1.9 (stable) PEAR 1.3.6 (stable) 1.4.4 (stable) XML_Parser 1.2.6 (stable) 1.2.7 (stable) XML_RPC 1.4.1 (stable) 1.4.4 (stable) The core PEAR update in particular is one that needs to be updated, the rest are obviously just incremental point fixes..
I've updated the non-bundled ones but I'd rather leave the ones bundled in the PHP tarball as-is.