I know this is an old thread, however, I did not see any relevant answers. The short answer is you need to make sure your CF is OK. Some CF have problems. ESI diddled around with SanDisk for awhile, but have landed on Apacer Industrial for most systems shipped. If you have a SanDisk CF, order a new CF from ESI and back-up and restore to the Apacer.
If you have not figured it out yet, ESI technical has NEVER heard of the problem. It's probably due to liability. Change the CF.
Rcaman