I had the same problem. I uninstalled and downloaded the latest version. From your blackberry, google "windows live messenger mobile" and it will take you to an OTA download.
Mike, I also have the same problem, MSN worked for months on my world phone, last month it has stopped. If anyone has figured this out, let me know . I'm also with Bell Mobility
Last edited by esnedden; 08-15-08 at 12:02 PM.
Reason: added more text