The remote host is missing an update to kazehakase announced via advisory DSA 1570-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201570-1

Andrews Salomon reported that kazehakase, a GTK+-base web browser that allows pluggable rendering engines, contained an embedded copy of the PCRE library in its source tree which was compiled in and used in preference to the system-wide version of this library. The PCRE library has been updated to fix the security issues reported against it in previous Debian Security Advisories. This update ensures that kazehakase uses that supported library, and not its own embedded and insecure version. For the stable distribution (etch), this problem has been fixed in version 0.4.2-1etch1. We recommend that you upgrade your kazehakase package.