[9fans] wait race?

[erik quanstrom <quanstro@coraid.com>]

this command frequently hangs on my terminal
	for(i in `{seq 1 $n}){echo fu>/dev/null&}

i've tried n=50 and n=150.  

acid says the shell is doing this

acid: lstk()
await()+0x7 /sys/src/libc/9syscall/await.s:5
wait()+0x1b /sys/src/libc/9sys/wait.c:13
	buf=0x36373031
	fld=0xdfffcc04
	l=0x35188
	w=0x35190
Waitfor(pid=0x2ae1)+0xb4 /usr/quanstro/src/rc/plan9.c:211
	w=0x35190
	p=0x36e70
	errbuf=0x353a4
Xbackq()+0x158 /usr/quanstro/src/rc/havefork.c:120
	wd=0x303531
	ewd=0xdfffeeef
	stop=0x1dd10
	pfd=0x5
	f=0x35190
	s=0xdfffceef
	v=0x36e70
	c=0xa
	pid=0x2ae1
main(argc=0x1,argv=0xdfffefb4)+0x327 /usr/quanstro/src/rc/exec.c:184
	rcmain=0x1642c
	num=0x35343031
	bootstrap=0x2
	i=0x0
_main+0x31 /sys/src/libc/386/main9.s:16

is this a race, or am i missing something?  (p9p rc does not
hang doing the same thing.)

- erik