When I visit codeigniter_shopping/welcome/index, there is always flashdata message telling "You did not fill out the form!".

When I visit codeigniter_shopping, there is no flashdata.

Or vise versa.

Could anyone tell me how to display this warning only when it should.

At the moment there is always this flashdata in the index.

Is there time limit for CI session?

It also does not show flashdata when I succeed the registration. It should show "Thanks for subscribing"

Nor Invalid email. Please try again! for email validation.

Is it wise to use flashdata for validation, if flashdata comes up like this?

Thanks in advance.