My iBook is being weird again. Well, some combination of the iBook and the rest of the network, anyway.
If I fetch a file from the Internet, I can get 300+ KB/s down to the Linux server. I can get 300+ KB/s down to the iBook. But if I transfer a file between the iBook and the Linux server, on the same switch, I get 4 KB/s.
It *used* to work just fine, so I’m not quite sure where the problem lies. While the transfer is in progress, the ‘frame error’ count on the network interface on the Linux side increases, which generally indicates a hardware problem, but swapping around cables and ports doesn’t change anything. A second Linux box can talk to the first one just fine at full speed but is also slow with the iBook, which would seem to put the blame on the iBook side of things, but the iBook is fine when talking to the Internet at large. It happens under both OS X and Gentoo on the iBook, so it’s not something in the OS. It affects Samba shares too, so it’s not FTP-specific either. Duplex settings are consistent.
I’m running out of ideas here… About the only other thing I’ve changed recently is the firmware on the router (a Linksys BEFW11S4), but this is supposed to be a stable version and the trouble didn’t start back then.