Take a look at these to see what may be going on: http://www.pcausa.com/Utilities/pcattcp.htm http://iperf.sourceforge.net/ Some other suggestions would be updating the drivers as well. Regards, Mike On Feb 18, 2012, at 10:05 PM, Derek Trotter wrote: One of the machines runs windows xp. The other runs either kubuntu 10.04 LTS or windows xp. Sometimes I and moving large files and sometimes smaller ones. There's not a lot of difference between what os the machine is running or what's being transferred. Although the transfer speed does drop a little when I'm moving small files. I've read that cat6 is supposed to be used with gigabit ethernet, but i didn't know at such a short distance it would matter. The next time I go to the store I'll get some cat 6. If it doesn't make any difference at least I'll have a spare bit of cable if I need it. thanks On 2/18/2012 21:43, Mike Bydalek wrote: What's the data you're transferring? Lots of small files (ie pictures) or large files (ISOs, MP4s, etc)? What's the OS of each side? The problem could be your cable as 1000BASE-T was made to work with Cat5, but Cat5 wasn't designed to work for 1000BASE-T. Regards, Mike On Feb 18, 2012, at 9:36 PM, Derek Trotter wrote: I have two computers sitting right next to each other connected via a 6 foot long piece of cat 5 I picked up at Wally World one day. They both have gigabit ethernet cards in them. Both machines recognize the connection as a gigabit connection, but I'm lucky to get half that. Most of the time I get around 40%. Is there anything I can do to get the connection to work a bit faster? thanks --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings:http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings:http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss