Also from David Kaelbling:

Building gaim/0.59.6 on SGI IRIX 6.5, I found that
the accept call in core.c'socket_readable was passing
uninitialized memory around. The man page says:

... The addrlen is a value-result
parameter. It should initially contain the amount
of space pointed to by
addr; on return it will contain the actual length
(in bytes) of the
address returned. If addr is zero, addrlen is
ignored.