running out of filedescriptors

[JinSoo Seo]

My squid cache complain that:
 WARNING! Your cache is running out of filedescriptors

How can I solve this problem?

# uname -a
SunOS casanova 5.5 Generic sun4m sparc sun4m
# squid -v
Squid Cache: Version 2.2.PRE2
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