I had that sometimes on the old version of the trainer.
With the latest version i fell off the eiffel tower and still lived, so i'd advise you to try the latest version of the trainer.
Q6600 @ 3.2GHZ
4GB Corsair Dominator @ 1066MHZ
Samsung Spinpoint F1 1TB (Win 7 Pro x64)
Seagate Barracuda 500Gb (Win Vista Ultimate x64)
Creative Gigaworks 2.1
26" Samsung T260 LCD