very slow file read/copy of WinXP to Win7

I have two PCs, it is WInXP, one is Win7.  On Win7, I produce read/copy of WinXP to Win7, it is very slow, about 10% of the 100 Mbps network (as indicated by the Task Manager and the status of file copy).  However, if I do the copy of file for WinXP to Win7, it is very fast, about 90% of the 100 Mbps.

It is using windows file sharing.

Why is this?

Please note that all operations are done on the Win7 PC, I have not tried to do it on PC WinXP again.  There are a few problems with Windows XP, access to the share on the Win7 PC (which can access any other PC Win7).  But it is not so important.

I do regular files between WinXP PC at work, they are typically 50% of 100 Mbps.

Thank you.

Hello

Please take a look at this thread that deals with what seems to be an ongoing problem that topic exactly. http://social.technet.Microsoft.com/forums/en/w7itproperf/thread/c723939a-c917-486A-a57c-83d0f76dfc49

Tags: Windows

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