Mann was due to start her 13-date outing October 11 in London, but has decided to “indefinitely postpone” things.

“Given the recent terrorist attacks, news reports of there being a 100 percent chance of another attack, yesterday’s military action, and the U.S. State Department’s strong warnings to Americans traveling abroad, we find ourselves in the unfortunate position of having to postpone our upcoming tour indefinitely,” she said in an October 7 statement on her Web site.

Ben Folds was in the support slot for the James arena tour of the U.K., which is set to run December 2-10. While James are still forging ahead, Folds has opted out but says that he is planning on making up for it next year.

Currently in the States on his Rocking The Suburbs tour, Folds’ November 9-16 concerts in Japan are still good to go).