It seems like a month doesn't go past without an new iteration of the Firefox web browser -- only a a day ago version 16 hit the internet ready for download.  Today it has been recalled!

Those who have already updated are being advised to downgrade after a security issue was discovered.

The issue allows "a malicious site to potentially determine which websites users have visited", Mozilla said.

In a blog post, Mozilla's director of security assurance Michael Coates said a fix was being worked on and should be expected on Thursday.

"At this time we have no indication that this vulnerability is currently being exploited in the wild," he added.

"Firefox 16 has been temporarily removed from the current installer page and users will automatically be upgraded to the new version as soon as it becomes available.

"As a precaution, users can downgrade to version 15.0.1 by following these instructions. Alternatively, users can wait until our patches are issued and automatically applied to address the vulnerability."

site by DAJ