Have you tried updating the PS3 Frimware?
Have you tried updating your routers Frimware?
Have you tried a diff router?
Have you tired directly connecting your ps3 into your cable modem?
PS3 firmware is the newest one (2.30 i think)
Yes, router firmware is upto date
Yes tried a linksys wrg54 but still does the same
Yes i have tried cabling it into my cable router, still rubbish speed.
Thats what i dont understand. When it is cabled straight to the router, there is no diffrence. But if i cable it up but use linux, the internet/speedtests run at full speed.