The remote host is missing an update to flamethrower (0.1.8-1+etch1) announced via advisory DSA 1676-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201676-1

Dmitry E. Oboukhov discovered that flamethrower creates predictable temporary filenames, which may lead to a local denial of service through a symlink attack. For the stable distribution (etch), this problem has been fixed in version 0.1.8-1+etch1. For the unstable distribution (sid), this problem has been fixed in version 0.1.8-2. We recommend that you upgrade your flamethrower package.