> it should naturally seek out a new host to download the
> remaining part of the file to fill up the last 1%, shouldn't it?

It does. But what happens if no new hosts could be found, this is gnutella... you never know. Wait some more days, if some of your downloads really never finishs and allways stop at 99%, report it as a possible bug.

> program automatically drops off hosts (for what,
> I have no idea.. is that supposed to be a bug??)

Sorry, I won't describe again, it has been well explained (keywords: dropping partial, multihosted parallel downloads).

Hope it helps, Moak