This is REALLY a M$ issue but I got no love from them, so I'll ask the real experts.
One of my users installed this MSN Premium thing and ever since he can't see anyones free busy info, his stuff shows up on everyone elses Outlook just fine.
Just for Shts&Grns I tried sending his info to a anonymous FTP site and it didn't go, nor did it read any .vfb or .ifb files there, again everyone elses did just fine.
I also tried loading his account on a different system with everything but the MSN thing and it works just fine.
He is an ex-M$ drone and seems to be content to blame Zimbra and myself for the problem.
Anyone else seen this and have a solution, the free/busy issue not the guy with blinders on