Help Screen freeze

[Saurus]

Hi, I've had my Galaxy S2 for less than a month now. Occasionally, maybe 2 or 3 times in that period, the screen just freezes when a call comes in and I cannot answer the call. As soon as the call goes to voicemail, the phone is fine.

I have searched and have not found any posts on the same issue. Anyone seen this before?

Using Android v 2.3.3
Kernel 2.6.35.7

Thanks...