[NTLUG:Discuss] what could be wrong?

[m m]

What could be wrong to have a slow connection?
I am talking about for the cable modem to internal network using linux (Fedora 8) as a router.
Download is terrible slow. about 10k/sec. Some web sites are never able to display, just hanging there. The google home page work fine and quick.
Checked with NICs, cables... all connected and works. 
I used to use RH5, Fedora 5 as a router, works good. the problem happened since I upgrade the linux box to FC 7.
Is it the kernel routing software problem?  
Any one use it as router and work perfect can give a hand?
Thanks  
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