libclamav2 0.91.1-1ubuntu3~feisty1 (amd64 binary) in ubuntu feisty

 Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of this
 software is the integration with mail servers (attachment scanning). The
 package provides a flexible and scalable multi-threaded daemon in the
 clamav-daemon package, a commandline scanner in the clamav package, and a tool
 for automatic updating via Internet through the clamav-freshclam package. The
 programs are based on libclamav2, which you can use in your own software.
 .
 For programs written using the libclamav library. Libclamav may be used to add
 virus protection into software. The library is thread-safe, automatically
 recognizes and scans archives. Scanning is very fast - in many cases it won't
 be noticeable.