Kernel Printk: xx message suppressed

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http://serverfault.com – Hi I have a watchguard firewall, and I lost access to the firewall before xmas, therefore I visited the site, upgraded the firewall to the latest firmware but unfortunatly, I am now having similar issues where I will lose access to the firewall, sometimes it will let me in sometimes nothing. I thought this was an issue with the actual hardware but now in the logs I see a constant stream of: 2011-12-29 09:47:38 kernel printk: 90 messages suppressed. Which makes me think this could be a DOS attack, I have contacted both my ISP's who say they are not seeing any unusual traffic on the connecit (HowTos)