Is there a speed test on Comcast's network?

Do you have a router? Try connecting your PC directly to cable modem and let us know what speed you get. I just found last night that my router can't handle 6MB speeds.

I do have a router, a Linksys WRT54G running Sveasoft. The thing is I was getting the full 6MB-- same router, same modem. Things seem to have started to slow down Just within the last week and nothing has changed at my end.

--Al

Sorry, you right it should have been 6Mb (for bits). I'm running SMC7004VBR and I can't get anything higher than 4Mb. When I disable firewall features SPI and DoS detection, it goes up to 7Mb.

DSLReports tests download and upload -- Try it !

You must have a real old model. They should be able to handle 8~10Mb/s

And that's Mb/s (megabit per second) not MB (MegaByte) there is a difference and I assure you, you are NOT getting 6MB/s from Comcast !

BTW: What is the model and revision of your Router ?

That's 6Mb/s not 6MB !

What kind of Cable Modem do you have? There is a problem with the Gold service and some models of Cable Modems. Check out

As far as your original question....no Comcast specific test sites..but try these

I doubt you've ever had 6 MB/s (48 Mb/s), as that exceeds what DOCSIS is capable of. Perhaps 6 Mb? Remember, B==bytes, b==bits.

The SMC Barricade family have 10/100Mb/s WAN ports and should have no problems with any DOCSIS speeds. If you are, you may have a defective Router. If FireWall features are limiting you then the unit could be defective. A hardware based FireWall should not degrade connections as you have noted. The certainly would not have used a 10/100Mb/s chip-set on the WAN side if it was not intended to be used with a 100Mb/s connection.