samba - Jun 1999 - One win98 client accesses linux server slower than the rest

I'm at my wits end. I've got a small network of win98 machines accessing
a linux file server running RedHat 5.2. We're running Samba 1.9.18p10-3.
All win98 machines can map to the shares on the linux box. However, one
of them takes an EXTREMELY long time to browse/transfer files to the
shares in windows explorer. As far as I can tell, the network set-up for
this machine is exactly the same as the ones that browse/transfer the
shares normally. This machine does have a parallel port Zip drive
connected to it as well as a CD-RW drive, but I can't see how that would
affect this. Any ideas on what might be the problem?

Thanks.
Tim