I recently updated my Skydrive to the newest version on Mac OS X. I am using 10.8.3 (Mountain Lion). However, I came across a sync issue with Skydrive. The program seemed to stop working, the Skydrive Icon was only gray. I then looked at the forums and it turned out that this is due to a verisign host header entry. To solve this issue, simply do the following:
1. Start the Terminal. You can get there by opening the Launchpad and type “Terminal”
2. In the terminal, run nano (the editor for OS X). It needs to have additional rights (sudo). Start nano with the hosts header, with the following command:
$ sudo nano /private/etc/hosts
3. Scan the file for “ctrl.verisign.net” and comment that out by adding a # at the beginning of the file.
4. save the file and quit.
5. restart Skydrive and it should work again.