I have a content type with a file field. In this file field i can insert images, and this field has no values limit.
The form is controlled by mollom module, obviusly.
When a user wants to modify a content, adding another image, has to enter a captcha.
If the user press 'enter' (with focus still on captcha), only the mollom form is sended, and the browser come back in the edit-node page, this time without captcha.
The problem is that at this point, if the multiple field has more than 2 values, the first value has been removed.
The user have to press 'save' to save the content, the new image is stored and the first is deleted.
This doesn't happen pressing 'save' button instead of 'enter' key.
I'm sorry for my bad english, I hope it's clear.