"curl" makes form submission result in 404

[eluser]@li[/eluser]
Another question.

1) Does this error occur if you put 'curl' in a form field, or does it also occur if you put > 500 characters in the field? If you put in a lot of text but omit curl, does it work?

2) Is your default controller set to index.php? I.e if someone goes to yoursite.com/tutorials/ and your controllers folder is setup as:

application/controllers/tutorials

then will CI look for an index.php to call as the default controller or something else (welcome.php, home.php, etc)