Networks have troubles at 9 p.m.

NBC might have been on to something in scheduling Jay Leno at 9 p.m. last year. But the network is finding out the hard way.

The Nielsen Co. said NBC averaged 6 percent fewer viewers during the 9 p.m. hour each weekday last week than it did during the comparable week with Leno last season. Leno's prime-time show was canceled in midseason, widely regarded as one of TV's epic failures.

NBC's "Chase," "Parenthood" and "The Apprentice" all had fewer than 5 million viewers in that time slot last week.

If it's any consolation, NBC isn't alone in the trend. ABC and CBS were down 8 percent at that hour last week compared with the previous year.

ASSOCIATED PRESS

1 Dancing With the Stars, Mon. (ABC)

2 NCIS (CBS)

4 Dancing With the Stars, Tue. (ABC)

5 NCIS: Los Angeles (CBS)

6 The Mentalist (CBS)

7 CSI: Crime Scene Investigation (CBS)

8 Sunday Night NFL Pre-Kick (NBC)

10 Two and a Half Men (CBS)

11 60 Minutes (CBS)

12 Desperate Housewives (ABC)

13 The Big Bang Theory (CBS)

14 Undercover Boss (CBS)

16 Grey's Anatomy (ABC)

17 The Good Wife (CBS)

18 Modern Family (ABC)

19 Glee (Fox)