iPad freezing

that does not happen to me, and it is not widely reported here. I would suspect some process(es) trying to run when you wake it up. May simply be it is trying to do too much all at once.

Trouble shoot by fully closing off all your apps. doulbe click the home button, swipe up to close everything. then put it to sleep and wake it up, and see if you get the same behavoir.

if not, then start opening things, try the sleep - until you come across the offender. As an example, if you have multiple subscriptions trying to update at the same time, while its checking the mail and a bunch of other stuff, it may be overwhelmed.

If this was a ios 7 issue, this board would be crawling with similar complaints. while there are some, it seems no more than normal.

hmmm.

there are only 2 more steps before you may need service.

1. Do a hard reboot. Press and hold both the home and sleep button until the apple logo appears. ignore the red slider. this is akin to rebooting a windows machine, and can cure all sorts of ills.

failing that.

2. plug the puppy into your computer and do a restore.

If those do not make the problem go away, you might think about a service call.