Downloaded trial products, installed full CS4 later but still saying 'x' days left before trial expires'. Is this normal?

Question

I downloaded the 30-day trial versions of Photoshop, DW, Flash, FW, etc onto a couple of new Mac Pro's for staff to work with while i was waiting for our full CS4 licenses to arrive.  I then installed the full CS4's from the DVD's onto the machines no problem, serials accepted fine - all good.  But whenever we open up an application, we still get up the screen at the beginning saying we're using the trial version and that we have (now) 2 days left before it expires.  I've tried entering the full license serial number into the option below this notice but it won't accept it.  I'm now very concerned that in 2 days time the staff won't have CS4 to work with even though it's been installed. 
Will it simply recognise the full CS4 version once the trial runs out?  Should i have uninstalled the trial first or entered my new full license serial into the trial without installing from the DVD's?  Have i done something wrong? 
Any views/help/advice/knowledge is much appreciated.

Answer 1

Did you uninstall the trials?
I would uninstall the software then run the CS4cleanscript.
then reinstall.