Dropbox is really starting to bug me. I have installed on my work PC, home PC, tablet, work laptop and my phone. Over the last week whenever I upload a file it doesn't sync across the other devices. What makes it worse is on the Windows computers; the icon and folder appear in Windows Explorer and I can view/interact with the files. However for it to sync I have to download and install Dropbox again
- the icon that usually presides in the bottom right of the taskbar disappears - only installing again will make it come back and then sync.
Any ideas?

Any ideas?