Fortunately mine came back up with the soft reset, so I was thankful to not have to rebuild everything. I will say that it crashed a handful of times before it finally completed the task, but this is commonly how it behaves when I try to sync or download the activity log anyway. Sometimes, it takes 10 requests before it finally completes the task. I suspect some users will have given up the multiple tries required and will simply do a hard reset.
I have never been able to diagnose what causes the hiccups.