Its so tough to tell. These HR and decision makers have so many resumes cross their desk for openings and sometimes they are just going through the motions of the appearance of hiring someone even though the have made their decision. Its also really hard to read these people and what they are really looking for in a hire.
You could be overqualified or underqualified or asking too much money(and let's face it money isn't usually discussed in initial interviews)or possibly just fulfilling a quota profile of people needed to be interviewed. Or a million other things. My wife is still looking for full time work down here in Florida after a year of living here and she was interviewed three times by local hospitals only to have the position go to an internal hire each time, something else you may have to overcome if you are applying in a large company.
Given the info you have provided, it really is impossible to say.
Good luck, though.