Shoutbox

I'm not sure if this is a MSGPLUS! error or a WLM error but I'll post here anyway.

Randomly, usually as I am chosing a contact out of my contact window, MSN locks up.  I've let it sit for hours and it wont unlock.  My contacts can chat to me all they want, without getting msgs returned but WLM is locked on my end.

Is this a fault of PLUS or MSN or neither??