I've been trying to dl a file for about 2 weeks now. It got up to 99% with just a few minutes left to go, then it goes down to 97%. Why does the progress get lower? I also get kicked out of line. Does this happen because the person I'm dl'ing from quit? I leave mine on 24/7 - is this ok to do? Thank you in advance!

Try browsing the host & if they have multiple results then browse those. This can sometimes promote another source being included in your downlding file. Other than that, re-search the topic to see if you can find more sources. Also see this: To continue files downlding (click on link) (see off-shoot links also!)

More times than not, I'm unable to browse a host.

This file I was talking about - it's over 700 MB, a window popped up saying the file was corrupted and do I want to continue? I clicked 'no'...but now I see the file in my window as 100% completed. Is it safe to run? It was at 99% + when the message came up. Thanks!