A number of people wrote in with the news that Tsunami Bomb has broken up. The Kung Fu Records act explained that the split is primarily due to the "business side of the industry" and said this on their MySpace page:

Sadly, the breakup is because of everything but the music. Over the years, while steadily growing more and more successful, we've also become more and more weighed down by the business end of the music industry. The side that you guys don't see as music listeners is immense. Managers, labels, sales numbers, sound scans, agents, producers, accountants, lawsuits, royalties, contracts… the list goes on and on. If all of these parts of the business stay aligned and go as planned, things should be easy to handle. That has not been our case. We've actually nearly broken up before each record has come out, for different reasons each time.

This time we decided we would get ahead of the mess and stay friends.

The rest of the explanation can be found here. The breakup follows the release of The Definitive Act in 2004.