Router or ISP Connectivity Issue

I am trying to figure out if the problem I am experiencing is a router or ISP issue.
Whenever I upload a videos or photos to Snapfish or just view movie trailers on Apple's Website the connection just freezes. I do notice that I can still send and receive e-mail using AOL. It almost feels like when it is a lot a data going through or fast all at once, Safari or iPhoto just stalls. The only way I can fix this is to reboot the router.
I do not if this in relations to my connection problem. I notice in my router's security log it keeps listing the same entry several times:
"Wed Feb 24 22:50:21 2010 1 Blocked by DoS protection 73.158.212.1 "
I trace the IP to Comcast in New Jersey. I do have Comcast but I am located in Massachusetts? What is going on?? Is it something I should worry about or fix?

I doubt it's your router, but the easiest test is to connect to your cable modem directly and remove the router from your connection. Try a few tests. If you still see the same problem then it has something to do with the computer or with Comcast. In this case contact their tech support. If everything is OK then it may be the router.
The security log entry is reporting a Denial of Service problem. This is related to your ISP so you'll need to ask them about it. The location associated with an IP address doesn't mean anything worrisome since the IP belongs to Comcast.

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BXB1905 wrote:
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Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
Configuring 802.1X in Mac OS X Lion and Later

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