Recommended Tests

Hi,
I have the Charter high speed internet service, the 3mb download and 256 upload package, but for some reason it is very slow.  I ran the test on this site and these are the results:

Connection is:: 368 Kbps about 0.4 Mbps (tested with 1013 kB)
Download Speed is:: 45 kB/s
Tested From:: http://testmy.net/ (main)
Test Time:: Tue May 17 16:54:36 EDT 2005
Bottom Line:: 7X faster than 56K 1MB download in 22.76 sec
Diagnosis: May need help : running at only 15.7 % of your hosts average (charter.com)
Validation Link:: http://testmy.net/stats/id-ORTG56DPL

Not sure what the problem is here....I ran all virus, spyware, and adware scans and my computer is clean.  I use a Motorola Surfboard SB4200 modem.  Anyone know what the problem is???
Thanks.

here is speed with cablenut set to VanBurens default for 3000 & 256 cable & winXP....have tried several adjustments & this is about all i can squeeze out....attached is settings

::::::::::.. Download Stats ..::::::::::
Connection is:: 3075 Kbps about 3.1 Mbps (tested with 2992 kB)
Download Speed is:: 375 kB/s
Tested From:: http://testmy.net/ (main)
Test Time:: Fri May 20 15:41:45 CDT 2005
Bottom Line:: 55X faster than 56K 1MB download in 2.73 sec
Diagnosis: Awesome! 20% + : 31.19 % faster than the average for host (charter.com)
Validation Link:: http://testmy.net/stats/id-EHR2CT38S

::::::::::.. Upload Stats ..::::::::::
Connection is:: 251 Kbps about 0.3 Mbps (tested with 1013 kB)
Upload Speed is:: 31 kB/s
Tested From:: http://testmy.net/ (main)
Test Time:: Fri May 20 15:51:06 CDT 2005
Bottom Line:: 4X faster than 56K 1MB upload in 33.03 sec
Diagnosis: Awesome! 20% + : 28.06 % faster than the average for host (charter.com)
Validation Link:: http://testmy.net/stats/id-6L8TCEYV9