Since I've been home in December when I take my headset off and put it back on, it seems to take 10 or 15 seconds to load back up in the headset. Two times I have had the game lock up on me. There was a driver and firmware update and a game patch when I got home. The last time I played before that was the first week of November and never had the issue.
On a side note I haven't had one hourglass freeze in 2 weeks since the Oculus update.