The following updates has been released for CentOS: CESA-2012:1089 Critical CentOS 6 thunderbird Update, CESA-2012:1088 Critical CentOS 6 firefox Update, CESA-2012:1091 Moderate CentOS 6 nss Update, CESA-2012:1089 Critical CentOS 5 thunderbird Update, CESA-2012:1088 Critical CentOS 5 firefox Update, and CESA-2012:1090 Moderate CentOS 5 nss Update

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