Latest Windows Live Messenger filtering SNAFU: “Setup.exe”
A month ago, Windows Live Messenger began blocking legitimate URLs from being transmitted to other users. As pointed out by Dharmesh Mehta, Windows Live Messenger product management lead, this process is actually handled outside of Microsoft, by a 3rd party (whom remains a mystery).
Today, I tried pasting an error message to a colleague of mine, Chris Holmes. No luck. The chat text would appear as if it was transmitted but no feedback was given in the UI. Poof. It was gone. Never touched the intertubes.
After a simple process of elimination, it was determined that having the string setup.exe anywhere within your message triggers the deletion behavior.
I am neither amused or surprised. I am, however, waiting for a reply to my inquiry regarding this issue. Psst Microsoft, this may help.

I think the URL blocker is getting out of hand, they are even blocking ligitimate websites, so its nearly impossible to share links with your freinds.
Somthing should be done about it, its getting outer hand
Reguards
Ashley
setup.exe are they insane? if i want to be stupid enough to click on one of these links i should be able to. MSN should stop blocking shit and try and educate its users on why they might not want to click it.
i think all link cant be sent now…//
even http://www.xanga.com/Private/SubsMain.aspx,,,,,,, i cant send tonight…
and now link can be sent…strange