So annoying!! I kept getting this error when trying to copy files from Vista to a samba network share. There is plenty of free space on the share (~500GB). Finally found this hotfix on microsoft’s support site.

Hotfix: http://support.microsoft.com/kb/954037

NOTE: This should be taken care of with Vista SP2 and above.BlogBooster-The most productive way for mobile blogging. BlogBooster is a multi-service blog editor for iPhone, Android, WebOs and your desktop