Disconnect on entering certain instances

Hello, sorry for not using the /bug but i can't see the way it would apply for this situation.
I also searched the forum for similar problems and found several but all of them old. Anyway since like few days possibly since the last update I'm getting disconnected while trying to enter specific instance. It happens like 50% of the times. It logs me of instantly or shortly after I see loading screen no other messages besides 'unexpected disconnection error occurred'. And with that I spoil good parties a lot. Who likes that? Immediately after forced log out I'm able to reconnect the game but when i try to join the same instance it happens again which implies that it is not an ISP related problem.

I forgot to add that it happens ONLY in party, i can solo all i want.

my regards ( or sth - sorry for me engrish )

Hello again i would like to remind that problem is not solved and wont cease to exists by itself.
Also I have to add that error message i get everytime, after disconnect is "failed to connect to instance".
Problem exists only in parties and only when i try to enter an instance which already has at least one party member in it.

Please dont let this game follow the path of thorchlight where connection related problems ruined the game completely.

Give them something to work on, which instances specifically, on which character, using which skills, where you are connecting from etc

I listened to your advice and tried to check with my first character ( i have only two ) first Windsoria witch lvl 84 - started in domination league - never had any of this disconnects before - today - after 2 minutes of playing - third instance joining - Sarn Encampment goin back from docks by someones tp ( in a party of course ) and i got a dc - let me stress that i did change NOTHING to the character since it was moved to standard league. My second char Imbra_Windsor also witch, the same - failed to connect to instance - for me it's sufficient to say that problem is global - and started to appear after some recent changes.
Answering your post:
- my every character
- different skills
- different leagues
- all instances i guess. So far : wetlands, fellshine ruins, ebony barracks, sarn encampment, a1n during trading ( only 2 ppl in a party ), eternal laboratory and different MAPS by tp from lab.

Imagine i pay some chaos for entering a lab MAP and get dc .... I'm too scared to try it yet and after all my second char in only 70+ so there was no real need until now but ....

I recently learned that PoE writes a log - so i read mine and found best parts - about disconnects im getting :
http://pastebin.com/5HkFpzyq

seems to me that serwer's at 173.192.12.* dislike me a lot! I'm using europe gateway. Please can somebody do something about it?
I also included one conversation in between disconnects regarding my problem.

I checked and found out that when i Ping one of those servers which host those instance i got :
Pinging 173.192.12.44 with 32 bytes of data:
General failure.
General failure.
General failure.
General failure.

in WinMTR i got 100% Loss for all nodes. I researched some more and found the root of the problem.
For all the people struggling with similar problem please check your ip blocking software.
In my case it was PeerBlock which was blocking the instance's servers. Sorry for all the spam i posted.

:)