CLIO, Michigan -- The Xbox had been a constant source of joy for Jennifer Walter's family.

In the seven years since her 22-year-old son brought it home, her three children had used the squat black console to play video games, watch movies and listen to music.

Now it is being blamed for ruining their home.

Two weeks ago, the family was startled awake about 3 a.m. by fire alarms in their apartment above the Whistle Stop Cafe, which they own.

When the smoke cleared, firefighters traced the cause of the fire to a recreation room off the basement where the Xbox sat.

Investigators concluded the Xbox -- which may have been on as long as four days -- had overheated and set a nearby spiral notebook on fire.