Invariable download time indiciation with tasksel

["Frederique W. Piccart" <fred@autistici.org>]

Dear maintainer(s),

I've noticed that tasksel recalculates the time every few seconds which can
lead to very variable time indications. The longer the download, the more
invariable.

For example, when I was on narrow band and the time indication for example
showed 3 hours and 30 minutes remaining, a few seconds later it would
simply jump to 2 hours and 50 minutes remaining. And it would constantly
switch to time values closely related to it, back to 3 hours and 28
minutes, and back to that 2 hour value.

I think it should be smoothend out. I'm using gNewSense mipsel-l which is
based on the latest Debian stable MIPS version.

Sincerely yours,
Fred