There is jet lag, and there is jet lag. And apparently John Noble is really down for the count on this one.

Warner Bros. Television has halted production of the final season of "Fringe" for two weeks while Noble, who plays Dr. Walter Bishop on the show, recovers from what the studio is calling a sleep disorder.

Shooting was already four days in on the Fox series when it was shut down, according to Deadline.com. The delay is not expected to affect the Sept. 28 season premiere date.

It does not seem that the condition is serious, but it is one that does affect Noble's ability to work, according to reports. While not specifying exactly what kind of sleep disorder he has, Noble had his aggravated by what was described as an intense travel schedule. He flew from his home in Australia right to San Diego earlier this month for a Comic-Con appearance, and then flew north to Vancouver to begin shooting the final season.

All the flying, and the severe time change from Australia to North America's west coast, has apparently taken a strain on the 63-year-old actor.

Filming is expected to resume Aug. 7.

Noble got a late start to screen acting, picking up his first work in the late 1980s. However, outside of a few exceptions like a British appearance in 1991's "Agatha Christie's Poirot" and an American appearance in "Time Trax" in 1993, nearly all of Noble's work has been in his native country (or in nearby New Zealand).

In fact, the role that got him the most American attention -- Denethor in "Lord of the Rings: The Return of the King" in 2003 -- was actually filmed on his side of the world as well. After that appearance, he started picking up more roles in American and Canadian series, but "Fringe" was his first major full-time series role in North America.

The pilot for "Fringe" was filmed in Toronto, but the first season ended up in New York City before production moved to Vancouver, British Columbia beginning in the second season.

Noble actually lives in the United States now with his wife and family, but he makes regular trips back to Australia, and reportedly spends his downtime there.

A flight between Sydney and Los Angeles usually takes around 15 hours. If that wasn't enough, Sydney is 17 hours ahead of Los Angeles, which can really throw off someone's sleep schedule.

"Fringe" returns for its final season Sept. 28. It airs Fridays at 9 p.m. ET on Fox.