BitTornado is writing garbage files of the correct size and name when it begins. It's only AFTER it's downloaded alot that those files contain the data they should!
Therefore, it should come as no surprise that you cannot "view" files that aren't done downloading yet!
Are you firewalled?
Are you on an ISP that hates bittorrent users and throttles bittorrent to <20 KB/sec?
Do you have a router? (btw: wireless + USB + D-Link = crap
)
Have you set your upload speed sensibly? (Trying to upload faster than your connection allows sabotages your download royally! Trying to upload to lots of people at once also does.)
There can be little things you can do to speed it up.