Curve :: My BB9320 Keeps On Freezing

I purchased two blackberry 9320s within this month and the first week, all was good and the phone worked brilliantly. Now, this phone freezes at least 10 times a day, irrespective of whether I am just playing a game on the phone or accessing something. It is becoming a real pain...had it been just the one phone, I would have said that it was something on the phone but this is happening on both the phones at random times. Is there some software that could resolve this? Is it the phone itself that is the problem? I am not happy with this. The fact that it is less than a month old says something. I don't even download onto the phone and am having these issues. There is not much on the phone at the moment as well.