Java resource cache is corrupt

The customer's applet runs fine the first time, or if caching is disabled. When
it tries to read a video file (via JMF), through the cache, the data is corrupt.

To reproduce this problem:
goto:

http://smartscienceusa.com/smartscienceserver/servlet/ChooseUser?ORG=DemoMix

Select "Tony Wyant - Science Lab Sample"

Select "Tony Wyant" as the user, and enter "potato35" as the password.

Select the "titration" activity example,

Then click on the "Lab" activity.

Click "View Experiment".

The first time, or uncached times, a video window will play the experiment.
Once it is cached, there are several errors on the Java Console. (can be seen
by clicking the "View Experiment" button again.