Dropbox login after every reboot?

[mavis]

Has anyone else experienced a problem with Dropbox, where it fails to remember your login information and prompts you to login and link the Mac with a Dropbox account after every boot? This has been happening for a while on my iMac (10.9.3, clean Mavericks install) and has persisted through Dropbox reinstalls, permissions fixing, and so on.

Does anyone know how to fix this problem?

 

[h9826790]

I have this problem few weeks ago. I couldn't remember exactly how I fix the problem, but most likely I used CleanMyMac to do a complete uninstall and then reinstall, also check and delete the possible faulty items in Keychain.