Windows Live Messenger Problem

[shihpo]

Two days ago, I started noticing that my friends who are using WLM on blackberry devices are unable to receive most messages sent from me (tried with 2 friends). Some messages would occasionally go through but 90% of them would not. However, others who are on the computers are fine. And my friends on the blackberries said that they could chat with other friends fine so I'm guessing the problem is on my end. I had not install anything new or had any major updates during the past 2 days. My WLM is v14. Any clue why this is happening?