Hi guyz ... theres a strange problem in my messenger. Few days ago I blocked some of my contacts. Now when I unblock them, Messenger cannot unblock them parmanently. When I sign out from Messenger and re-sign in then I see they are blocked again. What's wrong??

This could be like some problem that you've added the maximum contacts to your allow list. Not your contact list, your allow list. Tools> Options> Privacy. You can try noroom's list cleaner. Here's a link with all the things it does and a download link is provided at the bottom of the page: http://www.tsjaa.nl/modules.php?name=Software&op=viewarticle&artid=493
I hope that works for you, because all you might need is to simply clean your allow list up so you have space for contacts you'd like to talk to.

Edit: Also, the official site for the program: http://noroom.msnfanatic.com/listmanager/

Yeah, one of my contacts in my list gets blocked every time i sign in again.... I couldn't find a good solution for this...

When I told my contact about it (after unblocking that is ), he told me more people told him the exact same thing..

Maybe it's a (still unsolved) glitch, or something on your contact's side...

thats not correct! i have 35 people on my contact list and once half of them got blocked and the block icon didnt even show up.. so i had no idea that they're blocked, only when i right clicked on one and it said "UNBLOCK"

It happened to me and others only using web-messenger.. so maby the problem is web-messenger