QUOTE(http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_16831&sliceId=2)
The .DS_Store files are created by the Macintosh OS X Finder. The these files keep track of folder view options, icon positions, and other visual information about folders.
When a new directory is accessed using the OS X Finder, a .DS_Store file will be created in that directory. Once the directory is viewed using the Finder a .DS_Store file will be permanently created in that directory. Currently, the option to create a .DS_Store file can not be disabled.
Users should be concerned about .DS_Store files being uploaded to the web servers. Since .DS_Store files contain some vital folder information they can be exploited to obtain information about system configurations. Please see the following third-party link for more information: http://docs.info.apple.com/article.html?artnum=61798
When a new directory is accessed using the OS X Finder, a .DS_Store file will be created in that directory. Once the directory is viewed using the Finder a .DS_Store file will be permanently created in that directory. Currently, the option to create a .DS_Store file can not be disabled.
Users should be concerned about .DS_Store files being uploaded to the web servers. Since .DS_Store files contain some vital folder information they can be exploited to obtain information about system configurations. Please see the following third-party link for more information: http://docs.info.apple.com/article.html?artnum=61798
You can also disable this feature for network connections, see here : http://support.apple.com/kb/HT1629
Thanks to prototism on IRC for making us aware of this issue.