I tested this with both the packaged org-mode that came with my ubuntu
15.04 emacs24 install and with the latest org version on elpa.
Tasks with deadlines in the future spuriously show up under today's
schedule. E.g. Today is 2016-01-15 and I have a task with a deadline set
as 2016-01-19:
** TODO Prepare Goals of Internship talk
DEADLINE: <2016-01-19 Tue>
If I do an org-agenda week display (M-x orga-agenda a), I see a spurious
entry for that task:
...
Friday 15 January 2016
...
SKA-indo-SA:In 4 d.: TODO Prepare Goals of Internship talk
If I do a month display, a properly formatted 'deadline' entry is also
shown for the 19th:
Tuesday 19 January 2016
SKA-indo-SA:Deadline: TODO Prepare Goals of Internship talk
but the spurious entry remains at today's date. This is happening for
all my tasks with future deadlines, making my agenda display quite cluttered.