It all started with a report from a user, claiming that the pack had been found to include the Xorer Trojane. The Firefox maker confirmed the news.
According to Mozilla, it’s most likely that the mishap was the result of a developer’s system getting infected. Whatever the case may be, one thing is certain: Firefox users got a taste of unwanted ads.
The Firefox 2 Vietnamese language pack has now been pulled from the downloads list and will be added shortly after a thorough clean up. Until then, users are advised to disable this package using the add-ons dialogue on the Tools menu.
Mozilla stated that this was the first incident of its kind to affect Firefox and promised to revamp its testing procedure.