aptitude update and pdiff files

[Urs Thuermann <urs@isnogud.escape.de>]

For a couple of month I have seen an annoying change in behavior of
aptitude update and apt-get update.  Formerly, a couple of package
files where downloaded which took a few seconds.  Now I normally see
that aptitude update downloads hundreds of files named like 

    Get:282 2006-09-11-1318.15.pdiff [13.3kB]
    Get:283 2006-09-11-1318.15.pdiff [13.3kB]
    Get:284 2006-09-11-1318.15.pdiff [34.3kB]
    Get:285 2006-09-11-1318.15.pdiff [34.3kB]
    Get:286 2006-09-11-1318.15.pdiff [34.3kB]

and this takes quite long.  From the name I guess these are only
differences two package files so that less data have to be
transferred.  However, the overhead of nearly 300 TCP connections
causes this to take *much* longer on some systems than simply
downloading the whole package file.

urs