The remote host is missing an update to mozilla-thunderbird announced via advisory DSA 781-1. Several problems have been discovered in Mozilla Thunderbird, the standalone mail client of the Mozilla suite. For more details, please visit the referenced security advisories. The old stable distribution (woody) is not affected by these problems since it does not contain Mozilla Thunderbird packages.

For the stable distribution (sarge) these problems have been fixed in version 1.0.2-2.sarge1.0.6. For the unstable distribution (sid) these problems have been fixed in version 1.0.6-1. We recommend that you upgrade your Mozilla Thunderbird package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20781-1