Okay, anyone else getting this? Whenever my connection is interrupted for whatever reason (this includes the overnight maintenance period), and TWS reconnects, the quotes where I hold a position (or have 0's for having traded them earlier in the day) are frozen. All other quotes regardless of exchange are fine. The only solution so far is to exit and re-open the program.
At least it's not just me. Calling IB won't do anything, you gotta fill out those problem tickets through their website.