I wanted to thank you for posting this note. I have been searching the backwoods of the Internet regarding this problem. Only since the update have I had problems with my tablet. Facebook app, as well the messenger app are now freezing, crashing, and at times causing the tablet to reboot. I'm also getting notices on the screen that other apps loaded, but not currently in use, have shut down. Gmail app is also failing, but not always. The camera app is crashing too.
On other boards there are many, many posts of issues with the blue tooth connections no longer working. There are also many reports of contacts with Samsung support stating they have not heard of any of these issues.
Kathy, do a long press on an email message. Boxes will appear next to each message allowing you to individually delete them. It is really stupid. Why the select boxes can't allows be there is anyone's guess.
I'm using Gmail for one account and built in Email for my business account. To delete emails I simply go to my list and swipe left or right and they are sent to trash bin. I've had no problem since 5.0.2 update. I don't like Facebook app, I use Dolphin browser to see Facebook. No problems there either.