A majority of U.S. companies will expand or relocate their data centers by 2010, according to a 2006 AFCOM\/Data Center Institute study highlighted recently in Bnet. How can you tell if your company should be one of them?David Rosenbaum, a former CIO editor who now is editor in chief at The Bloom Group, took a page from the Late Show with David Letterman to write this Top Ten list. Cue the band and read it aloud.You know it may be time to move your data center when . . .10. Procurement can\u2019t keep up with the demand for duct tape9. There are several generations of field mice nesting in the wiring8. The data center staff wears battery operated head lamps because every time they turn on the lights, the fuses blow7. It was built when Pacman was the rage6. Your CIO has started installing new servers in the executive washroom5. Network uptime and downtime are running neck and neck4. The Computer Room Air Conditioning (CRAC) units are blocks of ice with fans strategically placed behind them3. Every time anyone asks your CIO about server virtualization, he vanishes2. There's a sign above the door that reads, "Abandon All Hope, Ye Who Enter."And the number one way to tell it's time to move your data center is . . .1. Your back-up generator is a team of hamsters running on a wheel.