I'm puzzled by the same problem, at the moment online EN show 250 MB upload allowance, one laptop with Windows show the same, one other laptop says upload allowance is reached and i cannot add any more notes. But strangely enough i still can add notes via web and the other machine. Re syncing doesn't help. Neither reinstalling the windows client. The problem occured after uploading a lot of bigger notes (40Mb each total 500 Mb starting at 200 Mb ending at around 700 Mb only one laptop thinks it's more than 1Gb) I don't understand why the client doesn't correct this failure because EN states online is leading.