Memory constrained i386 is affected on all versions of FreeBSD. Though
I am not able to reproduce this locally, it is reported that the hang
also occurs on -CURRENT i386 on a memory constrained Intel Pentium III.
(I am not able to reproduce this hang on my sandbox machine, with multiple
boot partitions, one of which is i386 -CURRENT, because it has plenty of
memory.)

Reported by: Michael Butler <imb@protected-networks.net>