Don't therapy but you do need a good hammer
I haven't experienced this type of bugs that you all are describing. But there are bugs in 4.3 that are really annoying and should be fixed in a hopefully soon to be released update.
1. Contacts disappearing/reappearing in messaging app.
2. Screen going black after selecting a contact to call.
3. Screen staying black after pulling it away from your face.
4. Home button not as sensitive as it used to be...takes more taps to get it to respond.
These are just a few that I have encountered. And yes, I have done a FULL factory reset along with clearing cache. I'm sure others have more bugs and some less but in all honesty.....there are bugs.