Itunes stops

Question

I have installed a belkin network usb hub to my wireless network to connect speakers, HDD, printers and mouse. this is then connected wireless to my laptop.

since installation itunes has now started to hang the problem is intermittent and I can play music for minutes or hours and it will suddenly hang, it shows as not responding then won't restart from the icon without a reboot.

my laptop is an extensa 4620z
speakers logitech Z-10
belkin network hub 5 port usb hub