Should I give up?
CyberFonic: You don't say what size your client biz are.  The larger the company the more likely that their decision cycle is long.  From my experience large companies can be 6-9 mths to decide.  If possible go for the real decision makers.Your feedback if "mildly positive" ????  Allowing for the fact that people are usually polite and diplomatic, that is not a good sign.  Why don't you find out what you would have to include / change to move them to passionate - hot to to trot ????Agree with the posts about "The Dip" and persistence.  It does take a long time and you don't want to give up 4 feet from the gold seam.