Samsung Galaxy SIII user here..
I wasn't having this problem (I used copy/paste quite often) until about 2 weeks ago. Now whenever I select text and press copy the app will freeze and close - it doesn't make it to the clipboard because I've tried pasting afterwards and there's nothing to paste.
It first happened when I was using Chrome so I thought it might have been a bug there - so I attempted using the default Internet app and the same thing happened, it would freeze, close and the error message would pop up saying the app stopped working.
I'm using Swype as the input keyboard so I considered that might be the problem - I switched back to the Samsung keyboard and the same thing happened.
I've tried hard resets and I did the firmware update last night - no change. I'm close to throwing this thing against a wall... argh.
Any updates from anyone who might have found a solution?