Your listing agent should be able to communicate with you about the reasons for the lack of traffic, and you should be a partner with him/her in their plan to market your home.
From what I see, Open Houses are not really the optimal way to attract a buyer to your home. While some Realtors like them because they can bring in potnetial clients, I do not know many who think they are productive. Most agents I deal with regularly also feel that newspaper listings (or really any "ink and paper" ads) are more about branding the Agency, and not so much about generating traffic.
To be sure, both help, but Real Estate has changed (as have all businesses) with the development of the insternet as a tool for consumers. Many, many people check out houses online first (I did). What kind of online presentation does your home make? Does it look similar, better, worse than others that are comparable? Where is your listing available to be viewed by prospective buyers?
Finally, the advice about price is good advice. Good homes at market prices are still selling, but many people have a fixed price in their head based on information from 2-4 years ao when the market was booming, and perhaps their ideal price is not reflective of the market now.
But, in the end - have a frank discussion with your agent and let hime/her kow of your dissapointment and discuss their marketing strategy and where to go from here. If you do not agree on the future path, or if there is no plan, then maybe it is time to part company.