In a media release, the organisers of the 2013 conference said they had pulled in more than 300 proposals before submissions closed on Saturday night.
The conference will be held at the Australian National University in Canberra from January 218 to February 2 next year.
LCA 2013 director Michael Still was quoted as saying: "It felt as though everyone left their submissions until the very last minute, my cardiologist thanks you".
While the work would be challenging, it was also "deeply interesting to see what's currently on the minds of the open source community," commented Ms Gardiner.
The line-up for the conference will be made public in September, 2012.