Q: Have to reset my iPad everytime I want to use the Internet ??

I have recently updating to ios6 and I have noticed that I have to reset my iPad 4th gen everytime I want to use the Internet. Once I have reset it the net works fine but as soon as I leave it for 20 mons or so and try to go back, the Internet is frozen and I have to rest again, this is becoming increasing annoying, can anyone help pls or is this a general problem with iOS 6 ?? Any advice greatly appreciated.