"Windows Live Sync for Mac has been updated to build 14.0.8096.0903, finally adding Snow Leopard support. Windows Live Sync for Windows has been updated to build 14.0.8089.0726, and fixes an issue with Windows Easy Transfer."
If you were locked out of Live Sync after upgrading to Snow Leopard, this should fix the problem. You need to go to the Live Sync site, download the latest version, sign in with Windows Live ID and then download the Mac client software.
Windows Live Sync Updated for Snow Leopard
Linear Mode
