[protagonist_h]

Upgrading to at least the latest minor version (0.7.6y as you say) may indeed be a good idea since there have been some security vulnerabilities discovered e.g.

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2629

Not sure if this poses any real danger in practice, but still -- better be safe than sorry.