Problem with File Sharing  -- Intel IMac Powerbook G4

When I try to connect to my Intel IMac from my G4 laptop, I am able to make an initial connection for file sharing, but when I try to browse the mounted volume, the files don't show up and after about 30 seconds the connection breaks, I get a 'Server Connection Interrupted' message, and the file sharing on the IMac turns off automatically.
Both OSs are up to date. Connection to G4 from IMac works correctly.
Is this happening for anyone else? Any ideas on how I might fix this?
Thanks

I too have the same problem, a Powerbook that won't let anything connect to it via Personal File Sharing. And I haven't found any explanation in these forums or otherwise. I'm pulling my hair out here...
Simple ethernet network with a Mini & PB G4, OS 10.4.7.
I can sometimes connect to the PB from the Mini via Personal File Sharing. But I always get the "server connection interrupted" dialog, as soon as I try to access the mounted drives. Then the Mini's finder hangs up, and I have to force quit, sometimes taking the entire system down with it.
I've tried connecting to the PB with other machines, and I get the same "server connection interrupted" problem. On the PB, I've rebuilt permissions, deleted /library/preferences/SystemConfiguration..., turned on & off all combinations of services and Directory Access, run fsck, created a fresh account, pretty much everything besides re-installing my system. Nothing fixes the problem.
Powerbook G4 12   Mac OS X (10.4.7)  

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