Nah,theres a thing to clear it but on FF1.5 there was an option for all downloads to clear as soon as they finished. It's nothing major.
(
Shuya Nanahara Sayonara,
Tue 5 Dec 2006, 9:48,
archived)
the "Remember what I've downloaded" checkboxin FF2 has the same effect
(
pzyko Query failed.,
Tue 5 Dec 2006, 9:55,
archived)