Xperia V random freeze in standby

Hi,

I got my Xperia V a couple of weeks ago and I am really pleased with it. I only have one problem which I do not know how to fix. Sometimes when the phone is in standby, I cannot turn it on again by pressing the power button. There is absolutely no response whenI do so. I can see the phone is still on because when I have a message, the LED is blinking. The only thing that works is taking out the battery and power it back up. I think it has happend to me 4 times over the past 2 weeks.

Is this a known issue to Sony and what should I do?

Best Regards,
Ulrich

http://talk.sonymobile.com/thread/60422?start=0&tstart=0

http://talk.sonymobile.com/message/352828#352828