Low transfer speeds in LAN connection between 2 XP systems

[Low transfer speeds in LAN connection between 2 XP systems]

Hi guys, here it is :

 

I have 2 XP systems (mainly with the same components) connected thru a 8-port switch. On the first computer i have Wingate & BlackIce and it's used for accessing Internet (via Dial-up, don't laugh, please )

 

Here comes the problem :

 

Let's say i want to transfer something (eg. a movie) FROM the server (the one with all Wingate and stuff) to my comp. It works really fine, in Task Manager it says 70% of the connection is used.

 

But when i try to transfer somtehing TO the server it works like crap. About 2% of the connection is used. I think it's pretty weird....

 

Also, i've stopped Wingate & BlackICe completely but this doesn't solve the problem.

 

Please help me guyz, coz it's driving me nuts !!!!

 

Thanks!