Anybody's phone just randomly reboot?
Mine does. I'm on a 4.
Also. If you have any problems and you have no choice but to restore as new. I have a way for you to do this and keep your photos and your notes. You can sync your apps and music later
Use ifunbox and go to var/mobile/media/dcim
Now copy the folders to your desktop. These hold your photos
Now go to var/mobile/library
Copy the notes folder to your desktop
You can see there's other folders in there. Like SMS saves your texting convos. Don't bother because it'll mess up your ability to send pics thru iMessage
After copying the pics and notes to your desktop restore your phone as new.
Jailbreak it
Add this source in Cydia repo.insanelyi.com
Install ifile
Using ifunbox go to the notes (var/mobile/library)
Drag the notes folder from your desktop here
Go to the photos directory (var/mobile/media/dcim)
Drag the folders there in ifunbox
Now using ifile go to var/mobile/media/photodata
Delete these files
View media item 271786
Now after a few seconds the photo app will update the images. Just pasting the pics in the dcim folder won't work. Deleting those files makes it work. Don't worry they'll come back afterwards.
The only thing is the images are gonna be a little out of order but its not that big of a deal