More for Atele...

This is just a thought... (And I am not at all sure that this would apply to what you are both describing, although rather differently ! Also, I am not that familiar with the current LW.)

Are either of you running an anti-virus application that will scan your downloads immediately upon "completion" ?
Is the hashing process of the download running ?
Seen many machines lock up due to both of the above occuring at the same time... Especially on large files...

p.s. I have renamed this thread as "only reach 99%" is not exactly on target, hmmm ?