This is the continuation of my previous post: No multiple instances anymore?
I did some further testing and it seems like I have found a way to stop Dropbox from entering the entire upgrade mechanism.
Please check out the new beta version and post in the comments if Dropbox starts updating itself or if it works flawlessly (please test this a few days, because the update routine does not start on every startup of Dropbox). You can check if Dropbox updates itself by looking at the tray icon. If it looks like Dropbox is syncing and the tooltip when hovering the icon says “upgrading Dropbox” then Dropbox is updating itself.
I ran multiple (10) Dropbox instances hundreds of times and the update routine never checked in. If this method works, then there will be no restrictions on the Dropbox status information, every instance should report it’s correct status.
Thanks for the votes, I didn’t thought that so many people would think about this issue.