NEbraskaCERT [http://www.nebraskacert.org/] has their call for papers for this year's (August 3-5, 2004) conference up at http://www.certconf.org/call2004.php
This year the conference planners are concentrating on Practical Security, so Linux and the BSD should be a pretty hot topic. ;)
The NEbraskaCERT conference is the Midwest's Premier security conference. Honest, really :-)
Disclaimer: I am friends with the members of the NEbraskaCERT Board of directors; have attended, assisted, and presented at past NebraskaCERT conferences and will most likely be presenting this year as well.
X-posted to olug, nebraskans, infosec, midwesterners, omaha_whatever