The remote host is missing an update to ktorrent announced via advisory DSA 1372-2.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201372-2

It was discovered that ktorrent, a BitTorrent client for KDE, was vulnerable to a directory traversal bug which potentially allowed remote users to overwrite arbitrary files. This updated advisory correctly increases the version number of the fixed package such that it is installable upon the etch release of Debian. For the stable distribution (etch), this problem has been fixed in version 2.0.3+dfsg1-2.2etch1. For the old stable distribution (sarge), this package was not present. For the unstable distribution (sid), this problem was fixed in version 2.2.1.dfsg.1-1. We recommend that you upgrade your ktorrent package.