Since a few days ago DropN900 is not syncing any files. It detects that some files have changed, apparently does sync them but they are not. The next time I try to sync the same files appear in the list of files to sync. I removed some new files in the DropBox server to check whether they were causing the problem, but the problem persisted. Today I removed DropN900, deleted the program folder and reinstalled the program. The same problem again. I guess there has been some change aither on the DropBox side or on the phone after some actualization that has broken the synchronization.