It took 6 months, but I have finally had what I would consider a non-minor problem with my iPhone 4. The camera stopped saving photos. It would focus, snap the photo, but crash before it actually saved.
Ugh.
It’s surprising how often I use the camera on the phone.
I found this blog post about deleting the thumbnail cache on an iPhone, and it seems to have worked. Also, it links to a neat program to browse the files on your phone. It took a couple restarts of the phone to rebuild the thumbnails, and then the Albums in the Photos app. Perhaps it would have only taken one restart if I had been more patient on the first boot.
I guess it’s time I back up those photos again.