This is currently by design. piwik.js tries to load the QuickTime helper ActiveX object to see if the plugin is installed. If I'm not mistaken, the firewall alert is probably triggering on "QT phone home", i.e., the QT plugin checks to see if there's a new version of the player available.

Note: more plugin detection is planned for #346.

Yes, I understand it's "by design" it's just, on a corporate level this will stop us using Piwik for now, unfortunately.
Any chance you could point me to the JS code to disable these PlugIn checks, please?
We'd be ok to have the whole PlugIn section not logging anything.

Thanks

In piwik.js, search for the string "Quicktime.Quicktime" and rename it to something like "Quicktimecheck.disabled". This leaves the plugin detection code intact for other plugins.

Alternately, change this function:

function _pk_plug_ie(dummy) { return false; }

to disable plugin detection on IE.

An upcoming release will have a new piwik.js.

This is excellent thank you so much
and good news for the future too very much appreciated ;-)

won't provide plugin detection disable method.
but will kill quicktime detection all together