How about 2006-07 ? OL won the title over Marseille by a whopping 17 pts but Marseille had 12 losses! 3rd place Toulouse had 14 losses! PSG was 15th! The leading goal scorer only had 15 goals and 2nd had 13 goals! Im by no means a Ligue 1 expert but I cant imagine a worse or weaker season than this. http://en.wikipedia.org/wiki/2006–07_Ligue_1
I'm only watching L1 since 2004. And 2004-2005 was an incredible pain. Lyon was already overpowerful - and quiet the only interesting team to watch. Remember this abominable August 31st, 23 p.m.: Pancrate and Coridon to PSG, Fiorèse to Marseille. Good-bye Heinze, Sorin, Drogba, Cissé. Lille finished second with Puel's special skill, which is turning Brunel, Moussilou, Vitakic and Tafforeau into Champion's League players.