Using OSX within a windows environment always has mixed results. After some quick investigation I had discovered that OSX wants to always create .DS_Store file on both local and remote drives. .DS_Store is a file that OSX uses to record data about the folder e.g.: view options etc. Not the most important feature when its locking up / slowing down access. This is caused when you access WebDAV, CIFS, SMB and OSX does not have write access to create the file.
To fix it open terminal and type the following:
defaults write /Library/Preferences/com.apple.SpotlightServer.plist ExternalVolumesIgnore -bool true
defaults write com.apple.desktopservices DSDontWriteNetworkStores -bool true
defaults write com.apple.desktopservices DSDontWriteUSBStores -bool true
Verify the setting:
defaults read com.apple.desktopservices
defaults read /Library/Preferences/com.apple.SpotlightServer.plist