Wireless Internet Stops working in Build 7048

I had same problem on my laptop ( Lenovo 3000 G230).
Anyone can help me?
thx

Hi:
I am new in this forum. I don't know if my problem is the same as the proviews post, but here it is: I've isntalled Win7 in my PC las weekend. Every time I started Explorer, after few seconds(maybe one minute), it will stop working and game me a pupup advising me that explores has stoped working and that it will close, and "cabum"stops. Some thing similar happends if I try to run Firefox, only that it will be running unless y try to download something. The only one that will run fearlly is Zafary, but still now and then will also stops working. You can say that it is hardware, but while using Vista Ultimate, it was working fine.

Regards,
Cardan

I am also having issues with Dell wireless 1359 WLAN Mini-Card. disabled IPv6 but still the internet stops working intermittently.Unchecked the power option for wireless but no luck. I am using Dell Inspiron 1525 laptop with Windows7 32-bit OS.