Maybe it is because the name of the package is foo_16a, not foo 

>     Maciej> Let me explain: of recent, I've noticed that for certain
>     Maciej> (few) packages if I do "dpkg -l foo" and it produces no
>     Maciej> matches/output, a subsequent "apt-get install foo" *WILL*
>     Maciej> find and install the desired package.  So if this package
>     Maciej> exists, why isn't it listed in "dpkg -l foo"???

Reply via email to