First, want to thank the Manager Tools, the interview podcast series is great!
I had an interview with the hire manager, followed up with him 2 days later and get a very quick response saying '...will be in touch soon regarding next steps...', and then get a call from the HR asking my current package. At that moment, I thought I got at least the second round or something.
But then no response, not at all, for 2 weeks. I've done a second follow up with both the HR (told me to follow up with the hire manager) and the hire manager (no response).
So I am wondering what's the deal here? Should I try to contact again or to convince myself that I am rejected?

You have the interviewing
You have the interviewing series, so you already know the answer to that: keep following up and always keep the tone positive.
update
Thanks TOMW!
Actually, just got an email and saying that they are having some organizational changes and this decision was held on.
I took the email as a positive message as they really don't need to tell me anything about that if they are not interested in me.