subdomain failure with CI

[eluser]ericsodt[/eluser]
I am working on a website and have created a sub domain 'dev'. I just finished my development effort on my localhost and just brought it up to my host server, and installed it within the subdomain dev.

The problem occurs when I try and submit a form. I can submit to http://www.<mySite>/dev/ but it fails to submit when I try to do http://dev.<mySite> or http://www.dev.<mySite>


Does anyone know how to fix this issue? I am sure it is something small...