This started a couple of weeks ago. When I start my machine which has Ubuntu 12.04 on it, I am told I need to download Dropbox again. If I click cancel the message pops right back up. If I click OK - Dropbox downloads, then tells me there is a problem connecting to Dropbox's servers then everything is OK again until the next time I start the computer at which time I have to go through the routine again. Has anyone else had this problem?