Just posted to the C::P mailing list. It's odd because when I use the prototype app from the web the upload works fine and doesn't hang and other form submissions that don't use file inputs work fine as well without hanging :-/ I will post a solution, or the resolution of this problem when it happens here.

Thank you for your help.

Sidenote: I wonder if :-/ :-) :-( etc will ever become accepted ways to end a sentance :-/