Chats not working because of miro

Hi, I have been using ichat, Skype and Adium together with Miro and browsers with no problem for months. I dunno why nowadays when I use Miro my chats get disconnected almost every 2 minutes. When I shut down Miro I have no problem with them. I have been changing the Miro preferences limiting upstream and downstream bandwidth but nothing seems to work. Please help! :-( Urgu.
Btw, browsers work fine, only the Facebook chat get disconnected together with the other chats.