1Password 4.0.3
AgileBits has released 1Password 4.0.3 in response to sync problems related to Dropbox that had bedeviled many users. Now available in the Mac App Store, version 4.0.3 resolves a problem that could cause syncing with Dropbox to stop after 1Password mini was restarted. (If you’re not familiar with 1Password mini, which was recently introduced with the release of 1Password 4.0, check out “1Password 4 for Mac Better Than Ever,” 3 October 2013, for an overview of the new features, and “Take Control of 1Password” for complete documentation.) Unfortunately, 1Password 4.0.3 doesn’t seem to solve a second bug that prevented instant syncing of new changes. Until that’s addressed by a soon-to-be-released update, you can force a sync by locking or unlocking 1Password or switching vaults. AgileBits is still running a temporary launch sale on its site and in the Mac App Store where you can purchase a new license for $39.99 or upgrade for $24.99. ($49.99 new, free update for those with a 1Password 4 license, 32 MB)
Why do you think they've got 4.0.3 in the App Store but still only 4.0.2 in their website downloads http://agilebits.com/downloads/ plus when I select "Check for updates" in the app it says my 4.0.2 is up to date?
And the App Store change log "What's New in Version 4.0.3" only says "Version 4.0.2 includes several important bug fixes."
Guessing here, since I don't have inside information, but based on what 4.0.3 fixes, I think the problems affected only the Mac App Store version, due to the necessary sandboxing.