Ai ya, be patient lar. Mine took like 1 month (I think 5-6 weeks) before they decided to call me for an interview.

When will they call you for interview depends on how many applicantions they get. If there are backlogs, then it only makes sense that they will only consider you application later. It also depends on how did you apply. Did you pass your CV to the person in the career fair, through some agencies, through mail, or online. If it is some other HR person, they might take their own sweet time before passing things around, or the interviewer might consider some sources of CV first.

Also, if you're not the cream de la cream and/or do not have a glowing CV, they might KIV you. This means that if some of their primary choices are not performing/did not turn up for interviews, only then will they consider you.

What I'm saying it, too many factors to consider. Just enjoy your life and wait for their reply. If they haven't get back to you in 3 months (may be 2 if you're impatient), then you can give them a call.

Well, it says so on the website. That should be fine imo.

1 month? No way. It has been stated earlier in this thread that the entire recruiting process (starting from the first interview) would be around 2 months normally, usually a bit longer.