TinkerTool allows you to disable the creation of those files on network drivers.. It's free too.
TinkerTool.. let's you tink, without leaving a stink? http://bresink.de/osx/0TinkerTool/details.html
TinkerTool.. let's you tink, without leaving a stink? http://bresink.de/osx/0TinkerTool/details.html
defaults write com.apple.desktopservices DSDontWriteNetworkStores true
source: http://support.apple.com/kb/HT1629