I installed Controller 4402 with 44 1252 APs. It just seems the wireless network is not passing dns info when a laptop is connected thru wireless (only able to ping by its IP adress) , but when same machines are wired they communicate fine by machine name.
Do you have a virtual address set on your WLC if so what is it?
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin