I use XP Home.Over the last couple of days I keep getting a pop up from Meesenger telling me that I have to upgrade my Messenger to the latest version.I already have the latest version but just to stop the pop ups I downloaded it again but I still get these mega annoying pop ups.The pop up says this...

.NET Messenger Service Staff says:
You are running a version of messenger that requires an immediate security update. Please visit http://messenger.msn.com/Help/Upgrades.aspx to complete the update.

Can anyone tell me what's going on?Or what I have to do to stop this?This is driving me nuts!

Thanks