403 error when adding data to textarea

[Tyssen]

I have a repeater field that contains title, an image field and two text fields, one for teaser and one for body. I can add data to all the fields except the teaser OK and save the page. As soon as I try adding text to the teaser field, I get a 403 error. The teaser field was using CKEditor, but I've now changed it to just a plain textarea but still get the same error.

Anyone know what might be causing that?

[BitPoet]

Is the webserver apache and mod_security active?

[Tyssen]

Yes it is. I'm contacting the hosting company about it now. Why would it only be triggered after adding a second textarea field though when the first one works fine? :?

[BitPoet]

I've stopped wondering about things like that. There are thousands of rules for mod_security, and 99% of those only make sense for wordpress sites.