Not disputing the above but the root of Australia's poor performance in the past couple of years has surely been stuff like getting bowled out for ****-all on day 1 of a Test. The bowlers, already a fairly fragile unit, are instantly under immense pressure to take wickets quickly without giving away many runs (every 4 hurts in that situation) and otherwise bowl their guts out just to limit the damage to a 200-run lead.
In some ways, it's still a problem too. Honestly, the SL tour has gone better than I thought but tougher bowling attacks like the Saffies will be a huge test and I'm not terribly optimistic. Not to mention, the next Test is at the SSC, a place where SL hasn't lost since Australia were last there. They've generally smashed the daylights out of anyone daring to cross the white line, no matter how good the team, and three bats (Jayawardene, Sangakkara and Samaraweera) have immense records there. If Australia don't win here, a drawn series is pretty likely.