Windows Live Messenger (MSN) not working

Hello guys,

I am currently using Astaro 8.303 and something weird is happening.
I have an application Control rule which allows specific users to use Skype and MSN but for some unknown reason, only Skype is working.
I´ve granted control to these applications: MSN, MSNP, Hotmail and Windows Live.
I tried to create a Firewall rule too since application control isnt working but no success. What am I doing wrong?

Thanks,