error: isc_socket_create: fcntl/reserved: Too many open files

[kebba.foon at qcell.gm]

Hi list,
i keep having this error repeatedly on my bind 9.5.1-P3 and it crash my
server am using debian lenny 5.0 and there is not upgrade for bind on
thier repository. any help thanks

07-Jun-2010 17:04:08.058 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.075 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.150 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.156 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.163 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.180 general: error: isc_socket_create:
fcntl/reserved: Too many open files
07-Jun-2010 17:04:08.189 general: error: isc_socket_create:
fcntl/reserved: Too many open files

Kebba