Problem : copying files to another machine on network

Hi,

I am doing development on ASP IIS. I connect to the webserver through a network.The server is on a cluster

Since the last 3 days any changes that i make to the pages on the server are getting overwritten by an older version. This happens only if i copy the changes from my machine to the server. If i do it from another machine i do not have the problem.

Can any one please throw some light on what could be the problem.

Really appreciate any inputs as i am at a dead end

Thanks,