Have the same problem today. Quotes on YM Dec 14 are freeze a few seconds after starting TWS. However, this only happens with TWS 946.2 (the current version), old version 936.9 works fine. And it only happens on my desktop computer, notebook also works fine (even with 946.2). Java on both(!) computers is 1.7_51. As usual, IB support suggested updating Java, trying out the non-standalone version of TWS and so on. All this while 946.2 worked fine until today and without updating ANYTHING (neither Java or TWS) in the last few weeks, so it's pretty unlikely that this issue is client-only related.
However, will try to update Java, but don't think it will change anything.
Funny thing is that quotes on ES and NQ are running fine.
However, will try to update Java, but don't think it will change anything.
Funny thing is that quotes on ES and NQ are running fine.