Yes it did go down twice, but I just leave TWS it automatically logs back in. Well, mine does anyway, so perhaps it's an option I've selected at some stage hidden away in the depths of TWS. 😀
IB does go offline occasionally, usually lasts 5 seconds or so, and often I don't notice until I get the Help suggestions screen up.
It's never bothered me actually, but then I can be quite relaxed about these things - I'm far more worried about getting runover by a bus!