Attention all Avast AntiVirus users,
Avast is incorrectly identifying the latest version of Miro as a trojan (malware). We have looked into the matter and Avast is the only antivirus suite making this mistake — we are getting in touch with them to rectify this problem.
In the mean time, it is perfectly safe to ignore the error message and install Miro.
Update: We have Avast users reporting that an update to the antivirus software will allow proper installation of Miro.