Windows Live Messenger Wave 4 bug

[FireFox276]

Hi! The beta of Messenger/Essentials Wave 4 is now out, huzzah! Well, not really, after about 3 mins of using messenger, I get disconnected from my Wireless Router. Windows 7 (x64) can't detect my wireless router after I've been disconnected although all my other wi-fi equipment (Xbox 360, iPhone, netbook etc) are still connected. After rebooting, Windows 7 still cannot detect my router. I have to go and manually reboot it.

Has anyone experienced this? Also, does anyone know how I can submit this as a bug to Microsoft?

Many thanks.