#5 The point is that people do say "the break" and not just "break" - "during break" might be more common, but "in the break" doesn't break any rules either.
Take the first three hits:
In the break I recall someone came with a steaming tray of bread pudding for which we paid l/2d. and it was delicious.
If they are sent late in the break they may
have to return the next day for a time.
Light refreshments will be provided in the break but pupils will be expected to bring their own packed lunch.
None of these sound like Denglisch to me.
Here's a better search with "the", though:
"during the break" http://www.google.co.uk/search?q=%22during+th...
"after the break" http://www.google.co.uk/search?q=%22after+the...
(Still hard to get just relevant hits, though, as "the break" could mean the summer or winter break, too.)