Please Install the Updated Packages.
A bug in the integration with CUPS causes programs that rely on xulrunner(Firefox, Thunderbird) to crash when trying to print (#61009). Packages for 2009.0 are provided as of the Extended Maintenance Program. Please visit this link to learn more: http://store.mandriva.com/product_info.php?cPath=149& products_id=490
xulrunner on Mandriva Linux 2009.0, Mandriva Linux 2009.0/X86_64, Mandriva Linux 2010.0, Mandriva Linux 2010.0/X86_64, Mandriva Linux 2010.1, Mandriva Linux 2010.1/X86_64, Mandriva Enterprise Server 5, Mandriva Enterprise Server 5/X86_64