Had my first lock when trying to answer a call this morning. Zero issues before the update yesterday so I'm assuming the update might have broke something. Looking in the log it seemed to be associated with the power managment and coming out of sleep.
I am also seeing a worse battery life which I think is associated with the WI-FI. From the battery usage WI-FI seems to stay on when the phone is idle. I thought it just switched the WI-FI on when collecting Emails?
So much for the update, that will teach me!
If you go into the Advanced WiFi settings, there is a setting to Keep Wi-Fi on during sleep. I have this set to Never but will use my data allowance when sleeping. Also below it, there is Best Wi-Fi performance option, I have this off.
I also noticed since the update yesterday, my screen brightness came off automatic and was on full!