fyi:

http://www.cpsc.gov/cpscpub/prerel/prhtml08/08560.html
http://www.cpsc.gov/cpscpub/prerel/prhtml08/08559.html

2008 Travel Trac Gravity Inertial Trainers (200 units affected through Nashbar)
2007 and 2008 Performance Travel Trac Trainers (3,000 units affected through Performance)

The springs in the resistance trainers can unhook and become a projectile, posing a puncture hazard to users or bystanders.