Luton failed to close the gap on the top two in the Blue Square Bet Premier after being held to a goalless draw by Mansfield at Kenilworth Road.
The Hatters started the stronger and almost scored in the 20th minute when Janos Kovacs' header hit the bar.
Mid-table Mansfield also created openings, with Adam Smith and Ben Hutchinson both going close.
But Luton finished the stronger and wasted several opportunities to record a sixth successive home victory.
VIEWS FROM THE DRESSING ROOM
Luton Town boss Gary Brabin told BBC Three Counties Radio:
"Frustrating is the word we've used in the changing room.
"We started with our three leading goal scorers in attack and we felt really confident we were going to score goals.
"But on the night our quality and inventiveness in the last third wasn't good enough."