The title of the article quotes an unnamed source saying Israel "fired more than a million cluster bombs in Lebanon" but the text of the article says "the IDF fired around 1,800 cluster bombs". Meanwhile Israeli reservists are complaining that they were given "no fire" orders on the front lines.
I'd be outraged if the story were credible, but it's likely just one of many fabricated stories (most of which are recycled from accusations made against the US in Iraq) coming from Lebanon, like this one:
http://www.youtube.com/watch?v=EDwqFMIPhbs&eurl=