cant download crossfire anymore.

heey,

i can't download completely. i download it, but it stops right before the end. so it doesn't complete... any1 has an suggestion?

and another question:
crossfire was doing weird last week on my other pc.. when i was playing a game, my desktop was coming round the 10 seconds.

*sorry for bad english*

I got a brand new computer with Windows vista home premium 64 bit and crossfire doesnt work on it. It starts up then dCs right at the login screen