Here is zprof after a "sudo apt-get install a<TAB>":
http://paste2.org/p/1219060
<http://paste2.org/p/1219060>And after a "sudo aptitude install a<TAB>":
http://paste2.org/p/1219061

<http://paste2.org/p/1219061>As you said earlier, all the time is spent in
_deb_packages_update_uninstalled...

2011/1/30 Bart Schaefer <schaefer@brasslantern.com>

> On Jan 30,  1:53pm, cheer_xiao wrote:
> }
> } I check the documentation that apparently there is no instruction on
> } how to load modules. Any hints?
>
> zmodload zsh/zprof
>
> The zmodload command ought to be cross-referenced from the "Zsh Modules"
> section, but there is an index entry for "loading modules" that points
> to zmodload.
>