Submitting textbox results in latin conversion not UTF8?

[eluser]Aken[/eluser]
As far as CI is concerned, it has no idea what type of input the text came from. Could be hidden, text, textarea, submit button. It won't target textareas specifically - it has to be something manipulating the data.

- Try removing all form validation rules except for required.
- Do you have any Javascript that changes form values at all?
- What does your do_upload() method do? Does it manipulate anything? Does it use the xss_clean TRUE parameter of $this->input->post() ?