iPad connected to wireless but Safari wont open
So I have the original iPad. Just bought about 2 weeks ago. Having a problem on my work wireless where is says it is connected but it will not open Safari or any apps that require internet access. This problem comes and goes. The wireless will work in the morning and then stop halfway through the day. My iphone is connected to the same wirless at work and has no problems at all ever. I have tried hard re-set, resetting network settings, shutting it on and on, turning off wireless and turning it back on and still wont work. The IP address is a 169. address and I have read online that this is the problem. Is there any way to fix this without just returning the thing? All the software is up to date. Gets absoultely annoying that it works on some free wireless networks and not others. Any help would be appreciated.
iPad