Vermont’s rocky start here also portends more fallout for CGI, and Massachusetts and Hawaii are already threatening to withhold payments for missing deadlines and botching up work. The company, buffeted by investor concerns about accounting issues and under pressure from short-sellers, has seen its stock price drop nearly 30 percent since its five-year high late last November, according to Y Charts, a stock tracking and analytics firm.

Linda Odorisio, vice president of global communications for CGI, said in an email that “CGI remains fully committed to delivering the robust functionality desired for Vermonters by Vermont Health Connect, now and in the future.” She declined to answer questions about CGI’s work for the state.

Website glitches aside, Vermont boasts one eye-catching figure: It has seen the greatest percentage of eligible residents – 15,015 out of 43,000 people – successfully enroll and select a health plan. The state expects an additional 55,000 Vermonters who work for small businesses to eventually enroll.

But that’s where Vermont’s numbers start to get fuzzy. “Select” doesn’t mean “cross the finish line” – actually buying a policy. More strikingly, the figures cover both online and paper enrollments that are later manually entered into the system by CGI. Translation: there is no way to tell how many Vermonters have used the website to successfully sign up.