error log

[walt]

2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
2008/08/28 16:57:00 [alert] 14892#0: accept() failed (24: Too many open
files) while accepting new connection on 0.0.0.0:80
more and more error log as these,what is the problem?
♫
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