Security issues were identified and fixed in mozilla firefox and
thunderbird:

Google Chrome user alibo encountered an active man in the middle (MITM)
attack on secure SSL connections to Google servers. The fraudulent
certificate was mis-issued by DigiNotar, a Dutch Certificate
Authority. DigiNotar has reported evidence that other fraudulent
certificates were issued and in active use but the full extent of
the compromise is not known.

For the protection of our users Mozilla has removed the DigiNotar
root certificate. Sites using certificates issued by DigiNotar will
need to seek another certificate vendor.

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

Additionally, some packages which require so, have been rebuilt and
are being provided as updates.