Upgraded FC4 to FC5 - no access to internet

[philbrog at ptd.net]

I upgraded from FC1 to FC2 successfully, and had access to the internet using 
FC2

I upgraded from FC2 to FC3 successfully, and had access to the internet using 
FC3.

I upgraded from FC3 to FC4 successfully, and had access to the internet using 
FC4.

Then I upgraded from FC4 to FC5, now I have no access to the internet using 
FC5.  I can use smbclient to get to a WinXP share on my home network 
successfully.  I can access my router via http://192.168.1.1 successfully.

Does FC5 come with a default ipchains or firewall setup that may be 
preventing me from accessing the internet?

Any other ideas?  I'm sure I'll need to provide more info but not sure what 
to provide at this point, so I'll wait for requests for more info.  Thanks!