I can't say that I have ever had any problem with Comcast. Have the 4MB package with the Digital cable, my bill is high, but it worth it for bragging rights for now.
Down close to Philly they are test the fiber internet, when that comes here. That is what I will have.
I tweaked XP SP2 just a little and this is what I have for a connection speed:
Connection is:: 6127 Kbps about 6.1 Mbps (tested with 5983 KB)
Download Speed is:: 748 KB/s
Tested From:: http://www.testmy.net/
Test Time:: Sun Mar 6 21:25:06 EST 2005
Bottom Line:: 109X faster than 56K 1MB download in 1.37 sec
Diagnosis: Awesome! 20% + : 96.38 % faster than the average for host (Comcast.net)
Validation Link:: https://testmy.net/id-67ZPEYDR4
Sure it's high, but I even adverage in the high 5MB range. Though I do pay for the faster package.
My system in a custom built:
Msi Neo fisre mainboard
AMD 64 3000+
512 Kingmax DDR
160 gig Sata HDD
Belkin Router