Windows 7 slow to browse Windows 2003 server

We have an issue in our network that is causing pc's using Windows 7 32 bit to be very slow when browsing a mapped network drive that is on a windows 2003 server.  The issue is present only on Windows 7 32bit pcs and only when connecting to a single windows 2003 server.  

1.  Windows 7 64 bit appears unaffected.
2.  Windows XP appears unaffected.
3.  It appears to only affect connections to a single server.

Looking for ideas to try.
Jason ChlopekAsked:
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sAiyAnstArConnect With a Mentor Commented:
Hi there,

Try running these 2 commands from your CMD prompt and see if that sorts your problem:

netsh int tcp set heuristics disabled

netsh int tcp set global autotuninglevel=disabled
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justgrand19Connect With a Mentor Commented:
also in advanced sharing options in network and sharing center enable 40bit sharing for older systems. It has increased my speeds using the same setup.
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Jason ChlopekConnect With a Mentor Author Commented:
Tracked the problem down to an issue with the NIC on the windows 2003 server.  Thanks for the ideas though.
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Jason ChlopekAuthor Commented:
Thanks for the ideas, I gave you each points.
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