I've connected a TL-WPA4220 to my Virgin Media Superhub 3, I set the wirerless SSID and password on the tp-link extenders to match my Virgin Media network.  Everything seemed to be working fine but after a frew hours the superhub froze.  I couldn't acess the internet or the hubs home page from wireless or wired devices.  I powered the hub off and back on and after the reboot everything started working but the problem keeps on happening, every few hours the superhub needs rebooting.

I was wondering if the problem might be to do with the wireless networks interfeering with one another so I tured wireless off on the tp-link extenders but the problem persists.  Any ideas?  Thanks :)