MBP to MacPro Network Connection Deadly Slow

I recently purchased an Intel MBP, and am connected to my home network wirelesly via a Belkin N1 router. Connecting to the Internet works just fine: speed is good, connection is strong, etc.
But connecting to shared drives over my home network - specifically, those on my MacPro - has become deadly slow. It can take hours to transfer files of a few MBytes. The MacPro is connected to the network via Ethernet. It has four full drive bays. The Internet performance (e.g., web browsing) on the MacPro is fine.
I previously has a PowerBook G4, and it did not have this problem - network speeds worked fine. It's only after I moved to the MBP that this started.
This problem occurs even if a connect the MBP to the network with an Ethernet cable.
Any suggestions are appreciated.
MacBook Pro/PowerMac Mac OS X (10.4.9)

William:
I've got DHCP turned on in the Belkin, so it's handing out IP addresses. The router does connect to a switch, and I haven't tried a different port on the switch, or resetting it, but I will.
One other thing to note - I have a Mac Mini as well; the Mini runs wirelessly. The connection from the MBP to the Mini has slowed down as well.
I was going to pick up an Airport Express router this afternoon and try it. If nothing else, I'll have a nice collection of Apple hardware...
Thanks for the feedback.
MacBook Pro/PowerMac Mac OS X (10.4.2)

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Message was edited by: new2appletv

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Bob Timmons wrote:
Two possibilities:
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If that's the case, then I'm feeling guilty, as it worked before I set it as a bridge.
2) Your log in information has changed due to service provider updates. Contact your provider to verify your account details
It's actually my mother who created that account; I'll ask her further.
my native language isn't English
But, your English is excellent.
Thank you.
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Wow, mine is actually way older than that! I don't think we've ever changed it since we had an Internet connection (around 1998). At this time, things were not designed to break too soon, right?
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I was pulling my hair out looking for a solution for this and it did not seem anyone had too much luck here. Hopefully this will help you all...
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Steve Caplin wrote:
Darin,
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If there was a ..."major problem with it" you would see more complaints than wifi just being among the top 10 discussion items in a trouble shooting forum. There are millions of MBP users many of whom, like myself, use wifi every day without issue.
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Hi Michael,
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Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
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10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
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Cured one slow one that way here...
https://discussions.apple.com/message/16241503#16241503
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applejack AUTO
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Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
Trash old Log files.
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I just got a work issued brand new MBP, and as soon as i try to connect it to my network, the network goes down. All the lights are lit on my modem and router and I even called the cable company and they didn't see any issues on their end. As soon as I reset the router and modem it starts working fine, but as soon as I try to connect the new MBP, it kills it again. Craziest thing I have seen. What could possibly be killing my network on this MBP?
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You have not provided any detail about your setup, connection, equipment, or configuration so any response will be a guess.
I guess you have not configured your computer and to use DHCP.
Second guess, you have not correctly set up your wifi security on your router and computer.
Third guess, you configured your computer incorrectly to share its network connection.
My suggestion, use an Ethernet cable to connect your computer to the router and check its settings and security. Once you get that connection working try setting up your wifi connection.
Provide more detail.

MBP to MacPro Network Connection Deadly Slow

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