"Beware the Ides of March" was the Shakespearean warning. In Canberra, at this time of year, it’s more a case of beware the Senate estimates committee hearings.

Talk about "expect the unexpected" -- as we used to say on the old HINCH program. Anything can come up when ministers, their department secretaries and public service honchos trudge up the Hill to umpteen public hearing rooms.