Does the statute of limitations begin to run after plaintiffs have already been put on inquiry knowledge?

Defendant argues that, even without actual knowledge, plaintiffs were put on inquiry knowledge more than three years before filing the action. The statute of limitations does begin to run "'after one has knowledge of facts sufficient to make a reasonably prudent person suspicious of fraud, thus putting him on inquiry . . . .' [Citations.]" (Cleveland v. Internet Specialties West, Inc., supra, 171 Cal.App.4th at p. 31.) But the court specifically found plaintiffs had no inquiry notice until late 2008, less than a year before they filed the complaint.