[cups.general] Unable to create cert file... too many open files

[Sun Advocate Webmaster]

I'm having a very unusual error with cups. The daemon fails every few 
hours. I get this error (repeatedly):

E [10/Apr/2005:10:37:49 -0600] AddCert: Unable to create certificate 
file /etc/cups/certs/0 - Too many open files

I haven't done anything special with the config. I installed cups on my 
SuSE computer, and then used YaST2 to set the printers up.

Here's my cupsd.conf:

ServerName domain.com
ServerAdmin webmaster at domain.com
Classification none
DefaultCharset UTF-8
DefaultLanguage en
Printcap /etc/cups/printcap
PrintcapFormat BSD
RemoteRoot remroot
SystemGroup sys
ServerCertificate /etc/cups/ssl/server.crt
ServerKey /etc/cups/ssl/server.key
<Location />
Encryption IfRequested
Satisfy All
Order allow,deny
Allow From All
Allow From 10.0.0.*
Allow From 127.0.0.1
Allow From 127.0.0.2
Allow From @LOCAL
</Location>
<Location /admin>
Require group sys
Encryption IfRequested
Satisfy All
Order deny,allow
Deny From All
Allow From 127.0.0.1
</Location>
HostnameLookups Off
KeepAlive On
KeepAliveTimeout 60
MaxClients 100
MaxRequestSize 0m
Timeout 300
Listen *:631
AccessLog /var/log/cups/access_log
ErrorLog /var/log/cups/error_log
PageLog /var/log/cups/page_log
MaxLogSize 1m
LogLevel debug
PreserveJobHistory On
PreserveJobFiles Off
AutoPurgeJobs No
MaxJobs 0
MaxJobsPerPrinter 0
MaxJobsPerUser 0
User lp
Group lp
RIPCache 8m
FilterLimit 0
DataDir /usr/share/cups
DocumentRoot /usr/share/cups/doc
RequestRoot /var/spool/cups
ServerBin /usr/lib64/cups
ServerRoot /etc/cups
TempDir /var/spool/cups/tmp
Browsing On
BrowseProtocols CUPS SLP
BrowsePort 631
BrowseInterval 30
BrowseTimeout 300
BrowseAllow @LOCAL
BrowseDeny All
BrowseAllow 10.0.0.0/24
BrowseOrder allow,deny
ImplicitClasses On
ImplicitAnyClasses Off
HideImplicitMembers Yes
BrowseShortNames Yes
authtype None
runasuser Yes