Stumbled across this the other day, I liked it.

http://speakeasy.net/speedtest/

It appears their servers are all in the US,
sorry for you mates across the pond!

Closest:
New York Server
7082 kbps download
355 kbps upload

Furthest:
Los Angeles
4720 kbps download
312 kbps upload

Closest:
Chicago Server
4467 kbps d/l
334 kbps u/l

Farther:
Los Angeles Server
4473 kbps d/l
340 kbps u/l

Hmm... Pretty much what Comcast promises... Though I thought I only had 256k upstream.  Pleasant suprise.

Still, this is at 1:17 at night.  Probably a lot slower during the day.

I did them all

Seattle WA

Download Speed: 438 kbps (54.8 KB/sec transfer rate)
Upload Speed: 229 kbps (28.6 KB/sec transfer rate)

San Fransisco

Download Speed: 979 kbps (122.4 KB/sec transfer rate)
Upload Speed: 229 kbps (28.6 KB/sec transfer rate)

LA

Download Speed: 1929 kbps (241.1 KB/sec transfer rate)
Upload Speed: 228 kbps (28.5 KB/sec transfer rate)

Dallas

Download Speed: 891 kbps (111.4 KB/sec transfer rate)
Upload Speed: 230 kbps (28.8 KB/sec transfer rate)

Chicago

Download Speed: 1342 kbps (167.8 KB/sec transfer rate)
Upload Speed: 230 kbps (28.8 KB/sec transfer rate)

Atlanta

Download Speed: 1871 kbps (233.9 KB/sec transfer rate)
Upload Speed: 233 kbps (29.1 KB/sec transfer rate

New york

Download Speed: 1551 kbps (193.9 KB/sec transfer rate)
Upload Speed: 227 kbps (28.4 KB/sec transfer rate)

Washington DC

Download Speed: 1313 kbps (164.1 KB/sec transfer rate)
Upload Speed: 231 kbps (28.9 KB/sec transfer rate)

Seattle, WA

Download Speed: 633 kbps (79.1 KB/sec transfer rate)
Upload Speed: 186 kbps (23.3 KB/sec transfer rate)

San Francisco, CA

Download Speed: 678 kbps (84.8 KB/sec transfer rate)
Upload Speed: 204 kbps (25.5 KB/sec transfer rate)

Los Angeles, CA

Download Speed: 659 kbps (82.4 KB/sec transfer rate)
Upload Speed: 203 kbps (25.4 KB/sec transfer rate)

Dallas, TX

Download Speed: 594 kbps (74.3 KB/sec transfer rate)
Upload Speed: 204 kbps (25.5 KB/sec transfer rate

Chicago, IL

Download Speed: 524 kbps (65.5 KB/sec transfer rate)
Upload Speed: 178 kbps (22.3 KB/sec transfer rate)

Atlanta, GA

Download Speed: 534 kbps (66.8 KB/sec transfer rate)
Upload Speed: 166 kbps (20.8 KB/sec transfer rate)

New York City, NY

Download Speed: 513 kbps (64.1 KB/sec transfer rate)
Upload Speed: 181 kbps (22.6 KB/sec transfer rate)

Washington, DC

Download Speed: 515 kbps (64.4 KB/sec transfer rate)
Upload Speed: 180 kbps (22.5 KB/sec transfer rate)

Mine seem to be over double yours wheezle which is really strange.

I own you all:

New York:
Download Speed: 8725 kbps (1090.6 KB/sec transfer rate)
Upload Speed: 837 kbps (104.6 KB/sec transfer rate)

I'm pretty happy w/ mine. Especially my upload speed.

Seattle, Washington:
Download Speed: 4803 kbps (600.4 KB/sec transfer rate)
Upload Speed: 468 kbps (58.5 KB/sec transfer rate)

Comcast tends to keep your upstream low while cranking up the downstream...  Discouraging hosting, I assume.

Quote (Corridale @ Feb. 22 2006, 8:54 pm)

Mine seem to be over double yours wheezle which is really strange.

You're on cable, no?

There's probably not many other people in your area with cable, so you get all the bandwidth. Mine used to be super fast when I first got it. Not so anymore.

Plus my cable modem is a bit old and screwed now.

They put the slate or whatever they call it outside my house... apparently how close you are from that REALLY matters or something... I was second in my neighborhood to get comcast interent, the first was my friend.  When I got mine his bandwith was cut by 3/4th... he was sooo angry!