http://bugs.winehq.org/show_bug.cgi?id=23323
--- Comment #131 from Devin Cofer ranguvar@archlinux.us 2010-07-04 12:14:40 --- Dennis, I would try the test program in the Linux kernel bug thread linked here on FreeBSD. If it doesn't work (no icebp), then talk to a FreeBSD kernel developer about this.
Raphael, try with a clean wine (no native wldap32.dll, nothing).