Check your adapters setting for speed and duplex

More that likely it is set to autodetect and that should be fine but you could try 100/full when plugged into the router and 100/half on the hub

Autodetect will only work if both sides are set for auto. Hard code one side and the other side can only guess. That can lead to huge slowdowns. Since hubs tend to only support half duplex everything connected to them should be set at half.

I have seen this setting get an entire floor full of users ready to start throwing things! Just because one side was set to auto and the other hard coded

Good luck

[ Quick Update... ]

Well I fixed my problem(s)...

1- Replace Crappy router
===================
My SMC Barricade router was throttling 60%  the bandwidth....
6Mb/sec going in from the cable modem,  2.4Mb/s coming out .

I was not doing anything fancy ( no NAT'ing, no firewall, no DMZ, ..just plain Jane routing).
There was no setting to tweak, so I had to assume that the router was just simply lousy.

Bought an older Linksys router for $10 and solved that problem.


2- Replace Crappy switch  
===================
Yes, I did have a 10/100 SWITCH , (not a hub as previously mentionned),
but it was a  cheap no-name Chinese  knock-off, ...and you get what you pay for...
The switch had a maximum throughput of 1.5Mb/s,
even when doing a PC-to-PC file transfer .    That's a 98.5% reduction in advertized performance
(...and yes, everything was set to   100 / Full  )

Big thanks to TinyRodent (Brett) for providing me with with a "real" 8-port switch.
The improvement was immediately noticeable.


3- Replace Crappy patch cords
=======================
Although my entire house is fully wired with good Cat-5E wiring,
some of the patch cords I was using for my PC connections were "lab left-overs"  
in various state of reliability.
So I replaced my home-made Cat-5 hack cables with premium Cat-6 patch cords
and got an extra 20% performance boost.

--

So all told, I went from having a pitiful 0.35Mb/sec to my PC,
right up to 6.0+ Mb/s after I changed everything.

I even hit 9.1Mb/sec this morning, when network traffic was light.

Wow... what a difference.. !       (...almost 30-fold ! )

I'm just mad at myself for waiting 2+ years to make this realization...

So the bottom line is,  make sure that your hardware is up to snuff !  


Cheers,
Steph