WTF? Why am I getting grey messenger popups?
Nope it's got nothing to do with MSN Messenger and why Microsoft put the messenger on as default is beyond me.
There are 2 ways to get rid of this:
1. Ether download shoot the messenger from here.
Or do the following:
2. Goto Start > Control Panel > Administrative Tools > Services .. scroll down to Messenger and right click and go to Properties
Then where it says Startup Type choose Disabled then click Stop and then OK and that's it!