Connectiviy problem with university network
Only lately I find connection problem occurs randomly during playing, the game disconnects and can only log in after a minute or two. But from yesterday, it is becoming unbearable, it could be as often as every 5 minutes.
I am using a network from the university. And some guild mates, who are also using networks provided by other colleges in Germany are suffering the same problem, and we disconnect at exactly the same time.
following is my trace route log. I tried to run the trace during the disconnecting time, but might not be very successful.

1 1 ms 1 ms 1 ms c6k-wohnheime.noc.RWTH-Aachen.DE [134.130.115.254]
2 3 ms 3 ms 3 ms c6k-sw23.noc.RWTH-Aachen.DE [137.226.139.9]
3 1 ms 1 ms 1 ms n7k-ww10-1.noc.RWTH-Aachen.DE [134.130.9.132]
4 1 ms 1 ms 1 ms pfi-stone-4.noc.RWTH-Aachen.DE [134.130.9.246]
5 3 ms 2 ms 2 ms c6k-xwin.noc.RWTH-Aachen.DE [134.130.9.225]
6 1 ms 1 ms 1 ms xr-aac1-pc1.x-win.dfn.de [188.1.43.109]
7 5 ms 5 ms 8 ms zr-fra1-te0-6-0-0.x-win.dfn.de [188.1.146.18]
8 19 ms 19 ms 19 ms zr-pot1-te0-0-0-4.x-win.dfn.de [188.1.145.206]
9 * 70 ms 20 ms hbg-b2-link.telia.net [213.248.69.33]
10 19 ms 20 ms 19 ms hbg-bb1-link.telia.net [80.91.253.53]
11 34 ms 154 ms 34 ms s-bb1-link.telia.net [213.155.130.117]
12 32 ms 39 ms 34 ms s-b1-link.telia.net [80.91.249.71]
13 32 ms 32 ms 32 ms 80.91.247.33
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.

Please reply if any other information is need to end this nightmare.Well, at first I thought it could be a port blocked from your network, but that would cause you to not be able to log in at all.

Me, and some friends had the same kind of problem a while ago, but it was in the Netherlands, what happened was that one of the routers at the border of Belgium and France was broken, obviously this is not something blizzard can fix, but if your mates could post their traces, the point of problem can be found quickly and perhaps blizzard contacts the one responsible (not sure on that, but for us the problem was gone the next day)

Thats the only thing I can think of, hope it helps.Thank Dujek for the information!
Some update to the situation. It was ok this morning, but since I joined a daily PUG(the tank comes from other realm), it is like 70% of the time I remain d/c, each successful connection can only remain about a minute.
After each d/c, there is a short time that I couldnt log on the realm server, but sometime can log the account, and able to see the realm list.
It seems the situation turns much better when I go outside the instance.
 
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