Upgrade continue to reinstall the some version.

["Gianluca Ciarcelluti" <gianluca@ciarcelluti.it>]

Hi,
I tried to install my package with apt-get install mypackage;
when I run apt-get update && apt-get upgrade it download
and install it againg instead of display the "Already installed
package" message.

Any help to make it work?

Here is my control file:
> -----------------------------------------------------------------------
> Source: alga
> Section: contrib/web
> Priority: optional
> Maintainer: Gianluca Ciarcelluti <gianluca@ciarcelluti.it>
> Build-Depends: debhelper (>> 3.0.0)
> Standards-Version: 3.5.2
>
> Package: alga
> Architecture: all
> Version: 0.9-3
> Description: Applicazione Libera
> --------------------------------------------------------------------------
>
> and the Packages file:
> --------------------------------------------------------------------------
> Package: alga
> Section: contrib/web
> Mantainer: Gianluca Ciarcelluti <gianluca@ciarcelluti.it>
> Architecture: all
> Version: 0.9-3
> Filename: project/alga/alga_0.9-3_all.deb
> Size: 378572
> Description: Applicazione Libera
> ------------------------------------------------------------------------

thanks...

Gianluca Ciarcelluti