A Lost Rerun?

During its first two years, the most infuriating thing about Lost was the reruns. In a series with strong continuity and constant cliff-hangers, the show lost all momentum when reruns intruded. Sometimes it seemed that they ran more reruns than new episodes. During the second season, they ran through the reruns so fast that they had to show some first season episodes as fill-ins.

Someone started a web site devoted to the question Is Lost a repeat? The site features a single word - either "yes" or "no". The site seemed out of date after ABC pledged that they would never show another rerun, ever again (not counting the times that they showed the prior week's episode at 8:00).

But today the answer is YES.

What happened?

Sweeps month. ABC preferred showing a rerun in April and having the show run an extra week during the May sweeps. Also, they preferred showing double episodes at the beginning and end of the season.