I have one of my computers set to backup sync once a day at 7:30am. You can see from this screen shot that it was last synced on the 23rd at 10:27 (manually). It was supposed to sync at 7:30 but it's already after 8am on the 24th.
There is nothing in the logs that would indicate a failure:
8/18/2011 10:14:46 AM(ver. 0.61) Error log dump info done.
8/18/2011 10:14:46 AM(ver. 0.61) 46 files and folders are using 15.3 MB
8/18/2011 10:14:46 AM(ver. 0.61) 13.8% of 1 GB used
Google Upload Server Built on Aug 1 2011 15:25:59 (1312237559)
8/23/2011 10:20:27 AM(ver. 0.61) Error log dump info done.
8/23/2011 10:20:27 AM(ver. 0.61) 46 files and folders are using 15.3 MB
8/23/2011 10:20:27 AM(ver. 0.61) 13.8% of 1 GB used
Google Upload Server Built on Aug 1 2011 15:25:59 (1312237559)