100% but not verifying

Hi, recently my downloads have been getting to 100% and then saying downloading- 0kbs. and it won't verify the file so that i can watch it. does anyone know why?

in case it helps i'll give some extra info. i have lw 4.14.10 i downloaded frostwire to see if i could get better search results but wasn't sure if it would keep my downloads so i didn't select the option to uninstall limewire and when i opened fw it wiped all my downloads. i determined fw to be naff and promptly deleted it and uninstalled it then opened lw and restarted downloading my files (one which had taken months to get to 86%- damn it.) then the next morning some things had completed but weren't getting verified. also, pausing and resuming didn't work.

please help!!

ps for monster fans (charlize theron) go to veoh.com. (the last dot is important) and search there. it's an ace site but have to check regularly 'cos things get deleted by staff and sometimes things are named differently so use the search options!

cheers!!!