As the title says when I am in the CasaTunes app the wifi will turn off. I can go to settings and choose my wifi, reconnect then open CasaTunes use the app for a few seconds then it will turn off again or it might work for a while but be really slow to react to any inputs. This is happening on my iPhone 4 and iPad 1 both running 4.2.1. I can get around this issue on my phone by going through my DNS which will control through the 3g on my phone albeit a little slow but my iPad is wifi only so no joy. Has anyone else experienced this?
I have also done some testing on my iPhone 3GS and it works very well and it is on the same firmware.