A new version of MSN Messenger has been released that fixes several problems including:
... and several others that are not mentioned.
I recommend downloading this Quick Fix Engineering release (QFE) as soon as possible. I clicked on the "Download and install later" link at the bottom of the Download MSN Messenger page, and double clicked the executable installation file, after it was finished downloading.
Be careful in step 3 after you run the downloaded file, since Microsoft uses defaults that you might not like. I prefer the settings as given in the image below
My article on how to add the handwriting feature has several more tips on setting up MSN, a recommended read.