2014/06/03 - Student Wi-Fi registration suspended
At present, the student Wi-Fi network does not have any IP addresses available for new registrations. As a result, students who do not already have a device registered on the Wi-Fi network will not be able to register a device. Those who already have a device registered should be able to register a new device in place of the old one. It is expected that this problem will be resolved soon after the end of exams.

Unfortunately, it is not possible to allocate more IP addresses to the network in question, and the problem must be solved by allocating IP addresses to devices on a non-permanent basis. Work is in progress to prepare the systems that will be affected by that change.
Unfortunately this problem has still not been resolved, and it is still not possible for new devices to be registered on the student wireless network.
There's further information about this at