I have the SAME problem. Restarted my computer. Turned it off & left it off for 30 minutes Ran a quick, an offline and a DEEP scan. NOTHING wrong on my end. Appears that MULTIPLE users are having the SAME issue, which means there's something wrong on the MSN side.
PLEASE FIX THIS!!!
While you're at it, you used to be able to see replies on a separate page, and clicking on them took you DIRECTLY to the post. NOW you only have one page on your profile with your OWN comments, and NO indication there if anyone responded to your response. Instead, you get these pop-ups that block the page, and you have to go FIND the response. And God forbid you try to close the pop up, then you'll NEVER find the post at all!
Your new system STINKS!!! PLEASEE go back to the old methods that ACTUALLY WORKED!!!!