I have a different problem than most of the sync problems with Dropbox discussed in this forum.
I recently found out that whenever I tried to access some Web Login password from within Safari and/or the 1Password Mini, I could not find some of them even though those missing passwords were in the main 1Password app on the same computer. That is I can find them in 1Password 4.1.2 but missing in the Safari and/or 1Password mini.
I had the same problem whether I use my Mac Pro or MacBook Pro Retina. All of them have Mac OS 10.8.5 installed. I use Dropbox to sync my 1Password keychains.
Thanks in advance for your help,