Undefined line top right hand corner in FF

Strainge popup message appears every 5 or 10 sec in FF but not in Chrome or IE

Undefined
Undefined
Undefined

WHAT CAN THIS BE??

Maybe a module gone crazy? Need site address and page where this happens.

It this topic it was determined to be a 3'rd party script. http://www.boonex.com/forums/topic/Undefined-.htm

So that is where you start. With anything you manually added into the websites header templates.

just checked it on other PC and laptop and FF version 19.0 and doesn't show up.
Good this have been a cache issue of browser... bcoz i always clear Dolphin cache after changes?

this lil wonder is still under investigation ...