We are using an accounting application on our local network that allows us to go offsite and have one of two computers host the customer files and any other computer on the network can access them via a shared folder. This was accomplished by carrying a wired router with us (linksys befsr41 v4.3) and we would hook the computers to it to share data (both computers running windows vista business edition).
Up until 3 or 4 months ago, this worked fine and performance was good. After a 2-3 month spell of not using this feature, it was used again and the speed accessing the app from the remote computer (not the host) is significantly slower. On the network back in the office, both computers access the files on the server with no problem but using this offsite method, it is much slower.
After some testing, I connected the two computers using a cross-over cable and it sped up quite a bit and was back to "normal" speed.
Can anyone think what may have caused this to slow down when connected through the router and not via cross-over cable?