cannot edit submitted form on firefox

i'm using form_auto. When I receive new data for my form, I can delete it, click (i) to view information. But clicking on the pencil to edit it will give me this error

Quote:

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The page isn't redirecting properly

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

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This only happens on my live site. And only with firefox...... With IE I can edit the form no problem. My local machine installation has no problem

Any idea how I can fix this? Cache? Firefox settings?

....mysite.com/contao/main.php?do=form&table=tl_form_auto&act=edit&id=1