Dropbox continuously syncing on one computer

I have Dropbox synced between two computers. On one it works fine. On the other, the little blue dot in the icon in the top tool bar shows that it's constantly turning (and I assume syncing). But there's no big files to sync and all the files are synced properly, so I didn't worry about it. But it's been happening for a week now. Is there anything I should be doing about this or should I let it just keep going? Thanks.