FileReference fileupload doesn't work with large files

Hello Forum

I am encoutering trouble with fileuploading using the new flash 8 fileReference class.

The server seems to be set up to handle larger files (up to 20megs right now).

I am not sure how to debug this. Anyone experienced this problem?

We are using php in the backend and the middleware / server should be set up to handle fileuploads up to 20megs.

Any insight or leads appreciated.

thanks

stephan