I have Ubuntu 12.04 installed on my dell laptop for couple of months(didn't want it but my company forced it). Rescently I am having some issues in connecting to some wireless networks. So far I have been able to connect to any wireless network. But at present I am not able to connect to my new home wireless , however with same laptop I am able to connect to office wireless and my friends wireless.The wireless is detected by Ubuntu and is present in the list of connection but can't connect, if I click it it is instantly removed not even asking for password. i am able to connect to my home wireless through my iPhone which means that there is no issue with my home wireless connection setup. Even if I use the iPhone as hotspot still not able to connect via Ubuntu
Request some help.