Shoutbox

It could be a number of reasons. Do you mean it is taking up a lot of CPU and slowing down your computer?

Well, theres nothing you can really do to stop this other than to just use one account at a time. Maybe set times on which account to log into.

It could also be the ammount of plug-ins you have, but i highly doubt it. As when you use MSN Messenger Live with Plus! installed not all the plug-ins run all the time. Most of them only run when needed.

Like i said the only thing i can think of it to just use one account at a time. Messenger Live is a big prog and will take a lot of CPU usage just running one.