You've run out of swap file numbers

i have this message in the message log next to this line
squid[21472]: Squid Parent: child process 32417 started
 (squid): You've run out of swap file numbers

Haow can i fix it...

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+-------------------------------------------------------------------+
| Gustavo Palacios (Mr.)           <gpalacios@petroecuador.com.ec>
| Network Administrator            <webmaster@petroecuador.com.ec>
| PETROECUADOR
| Empresa Estatal Petr�leos del Ecuador
| P.O. Box 17-11-5007, Quito, Ecuador
| Phone: +593 (2) 563060, [Direct: +593 (2) 562502]
| Fax:   +593 (2) 503571
| Cell:  +593 (09) 844118
| WWW => http://www.petroecuador.com.ec
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