Blocked sites

In order to access Tweet Deck, I have to disable the Comodo firewall. I tried making TweetDeck a Trusted Site and it did not help. Am I missing something or will I have to replace Comodo with another firewall application in order to use TweekDeck, Adobd Air and other sites that Comodo blocks.

Edit by EricJH: reverted all caps to normal case; there is no need to shout

What exactly is the functionality of Tweet Deck? Does it need to have one or more open ports for incoming traffic?