French champions Lyon suffered only their second defeat of the season as they opened 2007 with a 2-0 defeat at Toulouse.
Achile Emana opened the scoring for The Pink City club on the hour.
Lyon could not find a way back into the game as Swede Johan Elmander struck a second for Toulouse with just five minutes left.
Lens reinforced their position in second behind Lyon when coming from behind to claim a 1-1 draw with Lille.
Lille are pushing for second themselves and they led on 70 minutes through Fernandes Bastos.
Lens dug in, though, and Ferreyra Jussie pounced to secure a point for the home side.
Third placed Sochaux failed to take advantage of Lyon and Lens' failure to win, as they went down 1-0 at Auxerre.
The only goal of the game at The Stade Abbe Deschamps came from Ireneusz Jelen just four minutes from the end.
Bordeaux remain eighth after coming from behind against Lorient.
Rafik Saifi put Lorient ahead on 37 minutes, but Moroccan star Marouane Chamakh (85) levelled late on.
Paris Saint Germain's season took yet another negative step as they were beaten 2-1 at home by Valenciennes.
Thoughts of a title charge at the start of the season quickly evaporated and after slipping to defeat at home on Saturday they are very much in the relegation shake-up.
Valenciennes are struggling themselves and they deserve real credit as they claimed victory despite playing for most of the second half with ten men.
Patrick Pauuwe's dismissal did not hinder Valenciennes as they took the lead on the hour through Steve Savidan.
Sebastien Roudet made it 2-0 on 87 minutes and although Pauleta reduced the arrears in injury-time, Valenciennes held on for a fine win.
PSG sank just one place as of the teams beneath them only Nantes went above them, after they claimed a 1-0 win over second from bottom Nice, with Luigi Pieroni firing home in injury time.
Troyes could have also sent PSG into the bottom three, but they came unstuck 2-0 at Le Mans - with Daisuke Matsui (7 & 86) firing home twice.
Bottom of the table Sedan threw away a two-goal lead as Nancy claimed a 2-2 draw at Stade Louis-Dugauguez.
Nicolas Marin (pen 21) and Joseph Desire Job (31) looked to have set Sedan on their way to victory - but strikes from Mickael Chretien (45) and Sebastian Puygrenier (75) secured a share of the spoils for Nancy.
Click below for match summaries:
Auxerre 1-0 Sochaux
Bordeaux 1-1 Lorient
Le Mans 2-0 Troyes
Lens 1-1 Lille
Nantes 0-0 Nice
PSG 1-2 Valenciennes
Sedan 2-2 AS Nancy
Toulouse 2-0 Lyon