Hey guys. 

Hoping you guys might have some ideas as its got me stumped.  I have a customer who is with Slingshot for ADSL.  They have been having a problem for a while, and ive been trying t all sorts of things to fix it but to no avail.  The sync rate on the modem (details below) are pretty avergae for the area, but the web browsing, downloading of files and speedtests are all VERY slow.  slower than dialup most of the time. Ive tried different modems, the sync rates hang around the same between the modems, and the browsing/download/speedtest all are very slow with all modems.  Ill post the modem results now. 

Line Rate - Upstream (Kbps)    1156
Line Rate Downstream (Kbps)   9426


Unfortunately thats all the details I have, can get more if required 

All the speedtests I do come up with d/l speeds of around  0.4Mbps  but U/L is usually arouns .9Mbps which is expected.  These tests were done both wired and wifi.  I also used wifi and connected the computer to my mobile using as a data hotspot, and i was getting around 5.7Mbps on the 2degrees network  here which is pretty average.   So i know its not the computer itself, and i know its not the modem.  Several phone calls to tech support have yielded no results.  So im hoping someone out here might have some answers, or things i can try.  

Thanks in advance

Aaron