[cups.general] DDos attack

[Komal Shah]

I am receiving following error message in error_log.

W [10/Sep/2006:04:03:07 +0100] Possible DoS attack - more than 10 
clients connecting from localhost!
W [10/Sep/2006:04:04:07 +0100] Possible DoS attack - more than 10 
clients connecting from localhost!
W [10/Sep/2006:04:05:08 +0100] Possible DoS attack - more than 10 
clients connecting from localhost

lpstat returns

lpstat: get-classes failed: server-error-service-unavailable
lpstat: get-printers failed: server-error-service-unavailable
lpstat: get-printers failed: server-error-service-unavailable

Is there something to worry about?

Thanks

Komal