Noob question re Kernel update and iptables

[Frank Parker <frankparkerjr@yahoo.com>]

Hi,
Im very new to Linux.
I just installed Deb etch.
I got an update notice to update my kernel
I updated it.
Now i get the error:
iptables v1.3.6 can't initialize iptables table 'nat'  etc......

First of all I do not quite understand everything about Linux having come from a Windows environment.
What do I do to solve this problem?

I have a dell 5150 laptop and  dell 2300 router

Thanks,
Frank

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