http://spanningsync.com/suspended for more details. It currently directs to the Sales Suspended blog post. I know there are issues with 10.7.4 and calendars.
SpanningSync has been one of my most reliable ways to not only sync my Macs but with Google (which then syncs with everything else).
Is there a recommendation for syncing calendars and contacts with Google now? I foresee trouble ahead if not.