an small problems with auth and "space"

hello all

since few days ago i have been note that this is login in cache.log

2000/04/28 09:59:08| helperOpenServers: Starting 5 'ncsa_auth' processes
2000/04/28 09:59:08| ipcCreate: fork: (12) Not enough space
2000/04/28 09:59:08| WARNING: Cannot run '/usr/local/squid/bin/ncsa_auth'
process.

it look like we don't have free space in the system but :
/dev/vg01/lvol2 199381 38084 141358 21% /usr/local
/dev/dsk/c0t3d0 1909205 123858 1594426 7% /usr/local/squid/logs
/dev/vg02/lvol2 1017681 824619 91293 90% /usr/local/squid/cache3
/dev/vg02/lvol1 1017681 837030 78882 91% /usr/local/squid/cache2
/dev/vg01/lvol3 1033849 826492 103972 89% /usr/local/squid/cache1
you see, there are some space more ( and other filesystem have more free
space, none of them are more than 35 % of used)
squid are installed under /usr/local/squid directory, and it is the
2.2-Stable5 running on a HPUX-10.20.

the point is that the authentication is working!!! so why is the warning??
i will appreciate any enlightenment.
thanks

--
Roger
Administrador de Redes y Sistemas Linux (aprendiz :-) )
Red Telematica de Salud en Cuba
InfoMed www.sld.cu
Cuba