Installeer 6 al maar en laat die maar staan, want binnenkort gaat Microsoft alle gebruikers "dwingen" te upgraden door oudere versies niet meer te ondersteunen...... Dit o.w.v. de security risks van oudere versies.
Naar het schijnt min. MSN 5.0, ik gebruik het zelf niet, maar hier is het artikel waar ik het gelezen heb.
Microsoft Forces MSN Messenger Upgrades
And just in case you thought I'd be able to stop discussing
security this week, here's another related story: Microsoft revealed
this week that the company will require its Instant Messaging (IM)
users to upgrade to newer versions of MSN Messenger and Windows
Messenger. For security reasons, beginning October 15 the company will
shut off older-version access to the MSN Messenger network. Acceptable
versions include MSN Messenger 5.0 or newer, Windows Messenger
4.7.2009 or newer, and MSN Messenger for Mac version 3.5 or newer. The
company is also shutting out third-party IM applications, such as
Cerulean Studios' Trillian, that integrate with Messenger, citing
security concerns. Microsoft isn't discussing the security problems
the company found in earlier Messenger versions, but this news doesn't
come as a huge surprise, and most IM users tend to upgrade to newer
software versions anyway.