floor function in 7.3b2

I noticed that some of my queries don't work anymore because they're using
the floor function:
e.g.: select type, floor(date_part('epoch', dataend)) as ts from
last_modified

Why is floor not working anymore? I guess I can use round too, but I don't
want to modify semantics.

Regards,Mario Weilguni
icomedias <communication solutions/>    graz . berlin
-------------------------------------------------------icomedias ist Hersteller von ico>>cms: Information-und Content
ManagementSystem für Inter- UND INTRAnet 
-------------------------------------------------------

Mario Weilguni             icomedias gmbh
software engineering       entenplatz 1
tel: +43-316-721.671-17    8020 graz, austria
fax: +43-316-721.671-26    http://www.icomedias.com
e-mail: mario.weilguni@icomedias.com