I'm having an issue that I can't seem to solve. Anytime I download a DMG file on my mbp it can't ever open them! (1 out of the last 50 files I've downloaded has worked. Or at least that's my estimate). It doesn't matter whether I'm using Safari or Firefox. Safari has this issue where it will say 'verification failed' and when I try to open the file, it tells me it's still being downloaded. Firefox will tell me everything downloaded fine, but when I try to open it, the system tells me that the data is corrupt, or there was an error -4906 (I think), as well as a few other messages that I have forgotten. Not sure if it's related but I'm can't seem to successfully update my machine either. By the way I'm running snow leopard 10.6.3.